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Full vulnerability report · 2026
CVE-2026-85102High confidence

Check Point Multiple Products Improper Certificate Validation Vulnerability

Check Point · Multiple Products

9.8CriticalCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2026-09-25 as the remediation due date.

Patch available
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.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 7.55% 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 Check Point Multiple Products 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.

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-2026-75009

EU known exploited

Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 22 Sep 2026. Evidence sources: cisa_kev, eukev_kev.
ENISA score
9.8 · CVSS 3.1
Advisory evidence
2 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_ncscnl · NCSC-2026-0365Kwetsbaarheden verholpen in Check Point VPN-producten
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2026-09-25 as the remediation due date.

Patch available
01

What, why and how

Check Point Security Gateway and Check Point Spark Firewall using Site to Site VPN or Remote Access VPN contain an improper certificate validation vulnerability which could allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

What

Check Point Security Gateway and Check Point Spark Firewall using Site to Site VPN or Remote Access VPN contain an improper certificate validation vulnerability which could allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

Why

The product does not validate, or incorrectly validates, a certificate.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may execute code or commands in the affected security context.

What

Check Point Security Gateway and Check Point Spark Firewall using Site to Site VPN or Remote Access VPN contain an improper certificate validation vulnerability which could allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

Why

The product does not validate, or incorrectly validates, a certificate.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may execute code or commands in the affected security context.

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 2026-09-22.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Certificate Validation → execute code or commands in the affected security context
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-295 ↗

CWE-295: Improper Certificate Validation. The product does not validate, or incorrectly validates, a certificate.

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:U/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.SUnchangedScope: The security impact remains within the vulnerable component's 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
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
NetworkUnauthenticatedRemote code executionCWE-295CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-75009Known-exploited evidence recorded

Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the Gateway.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3305Check Point Security Gateway, Spark Firewall und Security Management: Mehrere Schwachstellen ermöglichen Codeausführung

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Check Point Security Gateway, Check Point Spark Firewall und Check Point Security Management ausnutzen, um beliebigen Programmcode auszuführen.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV26-902Check Point security advisory (AV26-902) – Update 2

As of September 9, 2026, Check Point is affected by vulnerabilities in the following products: Check Point has reported that CVE-2026-85102 and CVE-2026-93616 are being exploited in the wild.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260916Security Bulletin 16 Sep 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 16 Sep 2026, published on 16 September 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
INCIBE-CERT · Spanish · validacion-incorrecta-de-certificado-en-productos-de-check-pointValidación incorrecta de certificado en productos de Check Point

Check Point ha publicado 1 vulnerabilidad de severidad crítica que, en caso de ser explotada, podría permitir a un atacante realizar una ejecución remota de código arbitrario.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1152Multiples vulnérabilités dans les produits Check Point

De multiples vulnérabilités ont été découvertes dans les produits Check Point. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et un contournement de la politique de sécurité.

Official advisory ↗
NBSZ-NKI · Hungarian · cve-2026-93616CVE-2026-93616

A szoftver külső bemenetet használ a korlátozott szülőkönyvtár alatt található fájl vagy könyvtár azonosítására szolgáló helynév megalkotásához, de a szoftver nem megfelelően semlegesíti azokat a speciális elemeket az értékben, amelyek az útvonalat olyan helyre irányítják, amely a korlátozott könyvtáron kívül van.

Official advisory ↗
NBSZ-NKI · Hungarian · cve-2026-85102CVE-2026-85102

A program nem, vagy nem megfelelően ellenőrzi a tanúsítványokat.

Official advisory ↗
CSIRT Italia · Italian · risolte-vulnerabilita-in-prodotti-check-pointRisolte vulnerabilità in prodotti Check Point

Check Point ha rilasciato aggiornamenti di sicurezza che risolvono 2 vulnerabilità con gravità "critica" che interessano Security Gateway, Security Management e Spark Firewall, soluzioni dedicate alla protezione del perimetro di rete e alla gestione centralizzata della sicurezza. Le vulnerabilità potrebbero consentire ad un attaccante remoto non autenticato di eseguire codice arbitrario sui sistemi compromessi, sfruttando debolezze presenti nei meccanismi di negoziazione e gestione dei certificati VPN.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-035328チェック・ポイント・ソフトウェア・テクノロジーズのGaia Embedded等の複数製品における証明書検証に関する脆弱性

Check Point Quantum Security GatewayにおけるVPNネゴシエーション中の不適切な証明書信頼検証により、認証されていないリモートの攻撃者がGateway上で任意のコードを実行できる可能性があります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-035298チェック・ポイント・ソフトウェア・テクノロジーズのMulti-domain Security Management等の複数製品におけるパストラバーサルの脆弱性

ディレクトリトラバーサルおよびファイルアップロードの脆弱性により、認証されていない攻撃者がCheck Point Management Serverに任意のスクリプトをアップロードして実行することが可能です。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6965美 CISA 발표 주요 Exploit 정보공유(Update. 2026-09-22)

Check Point Multiple Products Improper Certificate Validation Vulnerability

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6959Check Point 제품 보안 업데이트 권고

Security Gateway, Spark Firewall에서 발생하는 Improper Certificate Validation 취약점(CVE-2026-85102) [6][12]

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0365Kwetsbaarheden verholpen in Check Point VPN-producten

De kwetsbaarheid met kenmerk CVE-2026-85102 heeft een CVSS-score van 9,8. De kwetsbaarheid bevindt zich in het VPN-onderhandelingsproces van de Quantum Security Gateway en wordt veroorzaakt door onjuiste validatie van certificaatvertrouwen. Hierdoor kan een niet-geauthenticeerde externe aanvaller authenticatiecontroles omzeilen en willekeurige code uitvoeren op de Security Gateway. Exploitatie vindt plaats tijdens de VPN-onderhandeling, waarbij certificaatgegevens onvoldoende worden gevalideerd. De kwetsbaarheid geldt voor Security Gateway en Check Point Spark Firewall wanneer Site-to-Site VPN of Remote Access VPN wordt gebruikt. Voor Site-to-Site VPN adviseert Check Point om implied rules for VPN uit te schakelen en VPN-toegang voor UDP/500 en UDP/4500 alleen expliciet toe te staan voor de specifieke peer-IP-adressen. Deze mitigatie is niet van toepassing op lokaal beheerde Spark Firewalls. De kwetsbaarheid met kenmerk CVE-2026-85103 heeft een CVSS-score van 9,8. Het betreft een heap-based buffer overflow in de ASN.1-decoding van VPN-certificaten, veroorzaakt door onjuiste verwerking van ASN.1-datastructuren tijdens de certificaatverwerking. Een niet-geauthenticeerde externe aanvaller kan deze kwetsbaarheid misbruiken om willekeurige code uit te voeren op het getroffen systeem. De kwetsbaarheid bevindt zich in een component die onderdeel is van de VPN-infrastructuur en kan bij succesvolle exploitatie de vertrouwelijkheid, integriteit en beschikbaarheid van het getroffen systeem beïnvloeden. Het NCSC verwacht dat op korte termijn pogingen tot grootschalig misbruik zullen plaatsvinden en roept organisaties op de advisory van Check Point met spoed op te volgen. **Update:** Check Point meldt dat misbruik van de kwetsbaarheid met kenmerk CVE-2026-85102 is waargenomen. Het NCSC adviseert de advisory van Check Point met spoed op te volgen. Raadpleeg de blog van Check Point voor aanvullende informatie. De inschaling van deze advisory blijft ongewijzigd.

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.
Patch available
Affected
Quantum Security Gateway: R82.10 with Jumbo Hotfix Take 43 or below, R81.20 with Jumbo Hotfix Take 165 or below, R82 with Jumbo Hotfix Take 125 or below
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 9 Sept 2026 · Last source change 23 Sept 2026, 03:55 UTC · CWE-295 · Improper Certificate Validation

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 2026-09-10
European sourceENISA EUVD · EUVD-2026-75009
Product sourceCISA KEV
Remediation sourceCVE/CNA references
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. 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-2026-75009)
    ENISA EUVD ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added patch: support.checkpoint.com/sk1000117; added remediation: support.checkpoint.com/sk1000117; 1 further additions.
    Before
    no authoritative guidance recorded
    After
    patch: support.checkpoint.com/sk1000117 · remediation: support.checkpoint.com/sk1000117 · vendor advisory: blog.checkpoint.com/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616
    cve@checkpoint.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Quantum Security Gateway: R82.10 with Jumbo Hotfix Take 43 or below, R82 with Jumbo Hotfix Take 125 or below, R81.20 with Jumbo Hotfix Take 165 or below · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Quantum Security Gateway: R82.10 with Jumbo Hotfix Take 43 or below, R82 with Jumbo Hotfix Take 125 or below, R81.20 with Jumbo Hotfix Take 165 or below · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CISA KEV ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    cve@checkpoint.com ↗
  5. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: cyber.gc.ca/check-point-security-advisory-av26-902.
    Before
    remediation: cyber.gc.ca/check-point-security-advisory-av26-902
    After
    no authoritative guidance recorded
    CISA KEV ↗
  6. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    CISA KEV ↗
  7. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    Canadian Centre for Cyber Security ↗
  8. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: cyber.gc.ca/check-point-security-advisory-av26-902.
    Before
    remediation: cyber.gc.ca/check-point-security-advisory-av26-902
    After
    no authoritative guidance recorded
    CISA KEV ↗
  9. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: acn.gov.it/risolte-vulnerabilita-in-prodotti-check-point.
    Before
    remediation: acn.gov.it/risolte-vulnerabilita-in-prodotti-check-point
    After
    no authoritative guidance recorded
    CISA KEV ↗
  10. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    CISA KEV ↗
  11. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: acn.gov.it/risolte-vulnerabilita-in-prodotti-check-point.
    Before
    remediation: acn.gov.it/risolte-vulnerabilita-in-prodotti-check-point
    After
    no authoritative guidance recorded
    CISA KEV ↗
  12. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    CISA KEV ↗
  13. CISA KEV stateCISA KEV now confirms exploitation in the wild.
    Before
    not listed in CISA KEV
    After
    listed in CISA KEV since 2026-09-22
    CISA KEV ↗
  14. Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: blog.checkpoint.com/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616.
    Before
    vendor advisory: blog.checkpoint.com/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616
    After
    no authoritative guidance recorded
    CNA ↗
  15. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: blog.checkpoint.com/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616; removed remediation: acn.gov.it/risolte-vulnerabilita-in-prodotti-check-point.
    Before
    remediation: acn.gov.it/risolte-vulnerabilita-in-prodotti-check-point
    After
    vendor advisory: blog.checkpoint.com/security-advisory-action-required-active-exploitation-of-cve-2026-85102-and-a-management-pre-authentication-vulnerability-cve-2026-93616
    blog.checkpoint.com ↗
  16. Affected versionsThe structured affected or fixed version information changed.
    Before
    R82.10 with Jumbo Hotfix Take 43 or below; R82 with Jumbo Hotfix Take 125 or below; R81.20 with Jumbo Hotfix Take 165 or below · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Quantum Security Gateway: R82.10 with Jumbo Hotfix Take 43 or below, R82 with Jumbo Hotfix Take 125 or below, R81.20 with Jumbo Hotfix Take 165 or below · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  17. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    blog.checkpoint.com ↗
  18. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  19. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    CSIRT Italia ↗
  20. ENISA EUVD mappingEUVD-2026-75009 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-75009"}
    ENISA EUVD ↗
  21. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-75009↗CISA KEV record↗CVE authority or vendor reference↗Vendor advisory↗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-2026-85102 · cve.blacktree.nl