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Full vulnerability report · 2026
CVE-2026-20079High confidence

Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

Cisco · Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management

Official source article: Cisco CISCO-SA-ONPREM-FMC-AUTHBYPASS-5JPP45V2 ↗. Check the applicable product and release in the original source.

10.0CriticalCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

CISA confirms exploitation in the wild and lists 2026-09-12 as the remediation due date. Verified remediation exists for at least one product or source, but 72 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • CISA confirms exploitation in the wild.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 88.66% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Cisco Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 72 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
cisco-sa-onprem-fmc-authbypass-5JPp45V2 · CSAF 2.0 · revision 2.6.0 · finalCisco PSIRTCisco Secure Firewall Management Center Authentication Bypass Remote Code Execution Vulnerability
72 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • Cisco Secure Firewall Management Center (FMC) 7.0.0 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.0.0.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.0.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.1.0 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.1.0.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.0.1.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.0.2 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.2.0 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.0.2.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.0.3 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.1.0.2 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
  • Cisco Secure Firewall Management Center (FMC) 7.2.1 when installed on Cisco Secure Firewall Management Center (FMC) Appliances
Summary
Complete.
Remediation
Cisco has released software updates that address this vulnerability.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-9438

EU known exploited

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.  This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device. 

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 9 Sep 2026. Evidence sources: cisa_kev, eukev_kev.
ENISA score
10.0 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

CISA confirms exploitation in the wild and lists 2026-09-12 as the remediation due date. Verified remediation exists for at least one product or source, but 72 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.

What

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.

Why

The product requires authentication, but the product has an alternate path or channel that does not require authentication.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.

What

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.

Why

The product requires authentication, but the product has an alternate path or channel that does not require authentication.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2026-09-09.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Authentication Bypass Using an Alternate Path or Channel → bypass an access boundary or take over an account
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-288 ↗

CWE-288: Authentication Bypass Using an Alternate Path or Channel. The product requires authentication, but the product has an alternate path or channel that does not require authentication.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
NetworkUnauthenticatedCWE-288CISA KEVPublic exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-9438Known-exploited evidence recorded

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.  This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device. 

Official EUVD record ↗
BSI · German · WID-SEC-2026-0610Cisco Secure Firewall Management Center: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Cisco Secure Firewall Management Center und Cisco Secure Firewall Threat Defense ausnutzen, um Root-Rechte zu erlangen, beliebigen Code mit Root-Rechten auszuführen, SQL-Injection durchzuführen und vertrauliche Daten offenzulegen sowie Daten zu manipulieren.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV26-197Cisco security advisory (AV26-197) – Update 3

On March 4, 2026, Cisco published security advisories to address vulnerabilities in the following products. Included were critical updates for the following: On March 18, 2026, Cisco stated that CVE-2026-20131 is being actively exploited.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260311Security Bulletin 11 Mar 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 11 Mar 2026, published on 11 March 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
INCIBE-CERT · Spanish · multiples-vulnerabilidades-en-productos-de-cisco-15Múltiples vulnerabilidades en productos de Cisco

o 79 vulnerabilidades: 45 de severidad crítica, 10 de severidad alta y 24 de severidad media que, en caso de ser explotadas, podrían permitir la ejecución remota de código o comandos con privilegios de root, la omisión de controles de autenticación y autorización, el acceso o modificación de información sensible, inyecciones SQL, XML o de comandos, path traversal , la carga y escritura arbitraria de archivos, Server-Side Request Forgery (SSRF) o denegación de servicio (DoS). Cisco ha confirmado la explotación activa de la vulnerabilidad crítica CVE-2026-76460. Además, el fabricante ha relacionado esta publicación con la explotación activa de CVE-2026-20079 y CVE-2026-20316, divulgadas anteriormente. Todas ellas parcheadas. Solución Cisco ISE e ISE-PIC: 3.0 y anteriores: migrar a una versión corregida; 3.1: 3.1 Patch 12; 3.2: 3.2 Patch 11; 3.3: 3.3 Patch 12; 3.4: 3.4 Patch 7; 3.5: 3.5 Patch 4. Cisco Secure Firewall ASA Software: 9.16 y anteriores: 9.16.4.103; 9.18: 9.18.4.94; 9.20: 9.20.4.49; 9.22: 9.22.3.26; 9.23: 9.23.1.47; 9.24: 9.24.1.26. Cisco Secure FTD Software y Secure FMC Software: 7.0 y anteriores: 7.0.10; 7.2: 7.2.12; 7.4: 7.4.8; 7.6: 7.6.6; 7.7: 7.7.13; 10.0: 10.0.2; 10.1: 10.1.0. Cisco Nexus Dashboard: 4.2 y anteriores: migrar a una versión corregida; 4.3: 4.3.1.175. Para BroadWork

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0242Multiples vulnérabilités dans les produits Cisco

De multiples vulnérabilités ont été découvertes dans les produits Cisco. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à la confidentialité des données.

Official advisory ↗
CSIRT Italia · Italian · risolte-vulnerabilita-in-prodotti-cisco-19Risolte vulnerabilità in prodotti Cisco

Cisco ha rilasciato aggiornamenti di sicurezza che risolvono diverse nuove vulnerabilità, di cui due con gravità “critica” e 15 con gravità “alta”, riguardanti vari prodotti Secure Firewall.

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6948美 CISA 발표 주요 Exploit 정보공유(Update. 2026-09-09)

Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6720Cisco 제품 보안 업데이트 권고

Cisco Secure Firewall Management Center (FMC) Software에서 발생하는 인증 우회 및 스크립트 실행 취약점(CVE-2026-20079) [1][3]

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0076Kwetsbaarheden verholpen in Cisco Secure Firewall Management Center

De kwetsbaarheid met kenmerk CVE-2026-20079 bevindt zich in de webinterface van Cisco Secure Firewall Management Center. Een ongeauthenticeerde externe kwaadwillende kan de authenticatiecontroles omzeilen door een onjuist systeemproces dat bij het opstarten is aangemaakt te misbruiken. De kwaadwillende kan deze kwetsbaarheid misbruiken door speciaal geprepareerde HTTP-verzoeken naar een getroffen apparaat te sturen. Een succesvolle exploit kan de aanvaller in staat stellen verschillende scripts en commando’s uit te voeren die root-toegang tot het apparaat mogelijk maken. De kwetsbaarheid met kenmerk CVE-2026-20131 bevindt zich in de webinterface van Cisco Secure Firewall Management Center. Deze kwetsbaarheid stelt ongeauthenticeerde externe kwaadwillende in staat om willekeurige Java-code uit te voeren met root-rechten. De kwetsbaarheid wordt veroorzaakt door de onveilige deserialisatie van door de gebruiker aangeleverde Java-byte-stromen. Een kwaadwillende kan deze kwetsbaarheid misbruiken door een speciaal geprepareerd, geserialiseerd Java-object naar de webgebaseerde beheerinterface van een getroffen apparaat te sturen. Een succesvolle exploit kan de aanvaller in staat stellen om willekeurige code op het apparaat uit te voeren en de rechten te verhogen tot root-niveau. Als de beheerinterface van Cisco Secure Firewall Management Center geen publieke internettoegang heeft, wordt het aanvalsoppervlak verkleind. Het is niet gebruikelijk om een managementinterface direct publiekelijk aan het internet bloot te stellen. Indien jouw organisatie gebruikmaakt van Cisco Security Cloud Control Firewall Management, dan betreft dit een SaaS-dienst (Software-as-a-Service) die door Cisco Systems automatisch wordt bijgewerkt als onderdeel van regulier onderhoud. Er is in dat geval geen actie van de gebruiker vereist. Het NCSC verwacht op korte termijn een publieke PoC en grootschalige pogingen tot misbruik. Het NCSC adviseert met klem de update zo spoedig mogelijk te installeren. Update 19-03-26: Uit onderzoek van Amazon threat intelligence blijkt dat CVE-2026-20131 vermoedelijk al sinds 26 januari actief is misbruikt voor het uitrollen van Interlock ransomware. Daarnaast is er inmiddels een publieke PoC verschenen voor kwetsbaarheid CVE-2026-20079. Het is daarom van groot belang om - indien dit nog niet gedaan is - te updaten naar de nieuwste versie van Cisco Secure Firewall Management Center. **UPDATE 11-09-26:** Cisco meldt dat succesvolle exploitatie van de kwetsbaarheid met kenmerk CVE-2026-20079 is waargenomen. Organisaties wordt geadviseerd de updates van Cisco direct toe te passen en kwetsbare systemen te controleren op aanwijzingen van misbruik. Raadpleeg de Talos blog voor aanvullende aanbevelingen. **EINDE UPDATE**

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
Official vendor articles1 stored document

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

04

Evidence and provenance

Published 4 Mar 2026 · Last source change 16 Sept 2026, 20:08 UTC · CWE-288 · Authentication Bypass Using an Alternate Path or Channel

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-9438
Product sourceVendor CSAF · Cisco PSIRT
Remediation sourceVendor CSAF · Cisco PSIRT
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    INCIBE-CERT ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2; removed patch: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2; removed remediation: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2.
    Before
    patch: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2 · remediation: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2
    After
    vendor advisory: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2
    psirt@cisco.com ↗
  3. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: incibe.es/multiples-vulnerabilidades-en-productos-de-cisco-15.
    Before
    remediation: incibe.es/multiples-vulnerabilidades-en-productos-de-cisco-15 · vendor advisory: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2
    After
    vendor advisory: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2
    psirt@cisco.com ↗
  4. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    psirt@cisco.com ↗
  5. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    Cisco PSIRT ↗
  6. ENISA known-exploited stateENISA EUVD now records this CVE in its known-exploited dataset.
    Before
    not listed in ENISA EUVD known-exploited dataset
    After
    listed in ENISA EUVD known-exploited dataset (EUVD-2026-9438)
    ENISA EUVD ↗
  7. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco Secure Firewall Management Center (FMC): 7.0.0, 7.0.0.1, 7.0.1, 7.1.0, 7.0.1.1, 7.1.0.1, 7.0.2, 7.2.0, 7.0.2.1, 7.0.3, 7.1.0.2, 7.2.0.1, 7.0.4, 7.2.1, 7.0.5, 7.3.0, 7.2.2, 7.3.1, 7.2.3, 7.1.0.3, 7.2.3.1, 7.2.4, 7.0.6, 7.2.4.1, 7.2.5, 7.3.1.1, 7.4.0, 7.0.6.1, 7.2.5.1, 7.4.1, 7.2.6, 7.4.1.1, 7.0.6.2, 7.2.7, 7.2.5.2, 7.3.1.2, 7.2.8, 7.6.0, 7.4.2, 7.2.8.1, 7.0.6.3, 7.4.2.1, 7.2.9, 7.0.7, 7.7.0, 7.4.2.2, 7.2.10, 7.6.1, 7.4.2.3, 7.0.8, 7.6.2, 7.7.10, 7.2.10.1, 7.0.8.1, 7.6.2.1, 7.2.10.2, 7.7.10.1, 7.4.2.4, 7.4.3, 7.7.11, 7.6.4, 10.0.0, 7.4.4, 7.4.5, 7.0.9, 7.2.11, 7.7.12, 7.6.5, 7.4.6, 10.0.1, 7.4.7 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Secure Firewall Management Center (FMC): 7.0.0, 7.0.0.1, 7.0.1, 7.1.0, 7.0.1.1, 7.1.0.1, 7.0.2, 7.2.0, 7.0.2.1, 7.0.3, 7.1.0.2, 7.2.0.1, 7.0.4, 7.2.1, 7.0.5, 7.3.0, 7.2.2, 7.3.1, 7.2.3, 7.1.0.3, 7.2.3.1, 7.2.4, 7.0.6, 7.2.4.1, 7.2.5, 7.3.1.1, 7.4.0, 7.0.6.1, 7.2.5.1, 7.4.1, 7.2.6, 7.4.1.1, 7.0.6.2, 7.2.7, 7.2.5.2, 7.3.1.2, 7.2.8, 7.6.0, 7.4.2, 7.2.8.1, 7.0.6.3, 7.4.2.1, 7.2.9, 7.0.7, 7.7.0, 7.4.2.2, 7.2.10, 7.6.1, 7.4.2.3, 7.0.8, 7.6.2, 7.7.10, 7.2.10.1, 7.0.8.1, 7.6.2.1, 7.2.10.2, 7.7.10.1, 7.4.2.4, 7.4.3, 7.6.3, 7.7.11, 7.6.4, 10.0.0, 7.4.4, 7.4.5, 7.0.9, 7.2.11, 7.7.12, 7.6.5, 7.4.6, 10.0.1, 7.4.7 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  9. Affected versionsThe structured affected or fixed version information changed.
    Before
    7.0.0; 7.0.0.1; 7.0.1; 7.1.0; 7.0.1.1; 7.1.0.1; 7.0.2; 7.2.0 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Secure Firewall Management Center (FMC): 7.0.0, 7.0.0.1, 7.0.1, 7.1.0, 7.0.1.1, 7.1.0.1, 7.0.2, 7.2.0, 7.0.2.1, 7.0.3, 7.1.0.2, 7.2.0.1, 7.0.4, 7.2.1, 7.0.5, 7.3.0, 7.2.2, 7.3.1, 7.2.3, 7.1.0.3, 7.2.3.1, 7.2.4, 7.0.6, 7.2.4.1, 7.2.5, 7.3.1.1, 7.4.0, 7.0.6.1, 7.2.5.1, 7.4.1, 7.2.6, 7.4.1.1, 7.0.6.2, 7.2.7, 7.2.5.2, 7.3.1.2, 7.2.8, 7.6.0, 7.4.2, 7.2.8.1, 7.0.6.3, 7.4.2.1, 7.2.9, 7.0.7, 7.7.0, 7.4.2.2, 7.2.10, 7.6.1, 7.4.2.3, 7.0.8, 7.6.2, 7.7.10, 7.2.10.1, 7.0.8.1, 7.6.2.1, 7.2.10.2, 7.7.10.1, 7.4.2.4, 7.4.3, 7.6.3, 7.7.11, 7.6.4, 10.0.0, 7.4.4, 7.4.5, 7.0.9, 7.2.11, 7.7.12, 7.6.5, 7.4.6, 10.0.1, 7.4.7 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  10. Public exploit evidencePublic exploit evidence changed from Public exploit reference to Public exploit reference.
    Before
    Public exploit reference
    After
    Public exploit reference
    blog.talosintelligence.com ↗
  11. CISA KEV stateCISA KEV now confirms exploitation in the wild.
    Before
    not listed in CISA KEV
    After
    listed in CISA KEV since 2026-09-09
    CISA KEV ↗
  12. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: sec.cloudapps.cisco.com/cisco-sa-onprem-fmc-authbypass-5JPp45V2
    psirt@cisco.com ↗
  13. Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.
    Before
    No public exploit
    After
    Public exploit reference
    seclists.org ↗
  14. Affected versionsThe structured affected or fixed version information changed.
    Before
    Cisco Secure Firewall Management Center (FMC): 7.0.0, 7.0.0.1, 7.0.1, 7.1.0, 7.0.1.1, 7.1.0.1, 7.0.2, 7.2.0, 7.0.2.1, 7.0.3, 7.1.0.2, 7.2.0.1, 7.0.4, 7.2.1, 7.0.5, 7.3.0, 7.2.2, 7.3.1, 7.2.3, 7.1.0.3, 7.2.3.1, 7.2.4, 7.0.6, 7.2.4.1, 7.2.5, 7.3.1.1, 7.4.0, 7.0.6.1, 7.2.5.1, 7.4.1, 7.2.6, 7.4.1.1, 7.0.6.2, 7.2.7, 7.2.5.2, 7.3.1.2, 7.2.8, 7.6.0, 7.4.2, 7.2.8.1, 7.0.6.3, 7.4.2.1, 7.2.9, 7.0.7, 7.7.0, 7.4.2.2, 7.2.10, 7.6.1, 7.4.2.3, 7.0.8, 7.6.2, 7.7.10, 7.2.10.1, 7.0.8.1, 7.6.2.1, 7.2.10.2, 7.7.10.1, 7.4.2.4, 7.4.3, 7.6.3, 7.7.11, 7.6.4, 10.0.0, 7.4.4, 7.4.5, 7.0.9, 7.2.11, 7.7.12, 7.6.5, 7.4.6, 10.0.1, 7.4.7 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Cisco Secure Firewall Management Center (FMC): 7.0.0, 7.0.0.1, 7.0.1, 7.1.0, 7.0.1.1, 7.1.0.1, 7.0.2, 7.2.0, 7.0.2.1, 7.0.3, 7.1.0.2, 7.2.0.1, 7.0.4, 7.2.1, 7.0.5, 7.3.0, 7.2.2, 7.3.1, 7.2.3, 7.1.0.3, 7.2.3.1, 7.2.4, 7.0.6, 7.2.4.1, 7.2.5, 7.3.1.1, 7.4.0, 7.0.6.1, 7.2.5.1, 7.4.1, 7.2.6, 7.4.1.1, 7.0.6.2, 7.2.7, 7.2.5.2, 7.3.1.2, 7.2.8, 7.6.0, 7.4.2, 7.2.8.1, 7.0.6.3, 7.4.2.1, 7.2.9, 7.0.7, 7.7.0, 7.4.2.2, 7.2.10, 7.6.1, 7.4.2.3, 7.0.8, 7.6.2, 7.7.10, 7.2.10.1, 7.0.8.1, 7.6.2.1, 7.2.10.2, 7.7.10.1, 7.4.2.4, 7.4.3, 7.7.11, 7.6.4, 10.0.0, 7.4.4, 7.4.5, 7.0.9, 7.2.11, 7.7.12, 7.6.5, 7.4.6, 10.0.1, 7.4.7 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  15. Public exploit evidencePublic exploit evidence changed from Public exploit reference to Public exploit reference.
    Before
    Public exploit reference
    After
    Public exploit reference
    seclists.org ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
ENISA EUVD · EUVD-2026-9438↗CVE authority or vendor reference · Cisco CISCO-SA-ONPREM-FMC-AUTHBYPASS-5JPP45V2↗CISA KEV record↗Public exploit reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-20079 · cve.blacktree.nl