Published severityHigh→Operational priority:Critical, raised one band.upgradedsince 10 Jan 2024
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 99.99% for the current model date.
Compensating controls
Apply the linked authoritative mitigation while planning the permanent fix.
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
Confirm that the asset runs Ivanti Connect Secure and Policy Secure and falls inside the recorded affected range.
Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
Validate exposure, authentication requirements and compensating controls in the actual environment.
Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
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-2023-50971
CISA KEV mirrored by ENISA
An authentication bypass vulnerability in the web component of Ivanti ICS 9.x, 22.x and Ivanti Policy Secure allows a remote attacker to access restricted resources by bypassing control checks.
EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 10 Jan 2024. Evidence sources: cisa_kev.
ENISA score
8.2 · CVSS 3.0
Advisory evidence
1 linked advisory record
Recommended actionMitigate now
CISA confirms exploitation in the wild and lists 2024-01-22 as the remediation due date.
Mitigation available
01
What, why and how
Ivanti Connect Secure (ICS, formerly known as Pulse Connect Secure) and Ivanti Policy Secure gateways contain an authentication bypass vulnerability in the web component that allows an attacker to access restricted resources by bypassing control checks. This vulnerability can be leveraged in conjunction with CVE-2024-21887, a command injection vulnerability.
What
Ivanti Connect Secure (ICS, formerly known as Pulse Connect Secure) and Ivanti Policy Secure gateways contain an authentication bypass vulnerability in the web component that allows an attacker to access restricted resources by bypassing control checks. This vulnerability can be leveraged in conjunction with CVE-2024-21887, a command injection vulnerability.
Why
The affected component does not establish the requesting party's identity reliably before granting access.
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
Ivanti Connect Secure (ICS, formerly known as Pulse Connect Secure) and Ivanti Policy Secure gateways contain an authentication bypass vulnerability in the web component that allows an attacker to access restricted resources by bypassing control checks. This vulnerability can be leveraged in conjunction with CVE-2024-21887, a command injection vulnerability.
Why
The affected component does not establish the requesting party's identity reliably before granting access.
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 2024-01-10. Known ransomware campaign use is recorded.
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 → Improper Authentication → 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
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-287: Improper Authentication. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
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:L/A:N
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.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2023-50971Known-exploited evidence recorded
An authentication bypass vulnerability in the web component of Ivanti ICS 9.x, 22.x and Ivanti Policy Secure allows a remote attacker to access restricted resources by bypassing control checks.
Official EUVD record ↗BSI · German · WID-SEC-2024-0059Ivanti Connect Secure: Mehrere Schwachstellen
Ein entfernter Angreifer kann mehrere Schwachstellen in Ivanti Connect Secure und Ivanti Policy Secure ausnutzen, um Sicherheitsmaßnahmen zu umgehen oder um beliebigen Code auszuführen.
Official advisory ↗Canadian Centre for Cyber Security · English · AL24-001Ivanti Connect Secure and Ivanti Policy Secure gateways zero-day vulnerabilities – Update 2
An Alert is used to raise awareness of a recently identified cyber threat that may impact cyber information assets, and to provide additional detection and mitigation advice to recipients. The Canadian Centre for Cyber Security ("Cyber Centre") is also available to provide additional assistance regarding the content of this Alert to recipients as requested.
Official advisory ↗Canadian Centre for Cyber Security · English · AV24-020Ivanti security advisory (AV24-020)
On January 10, 2024, Ivanti published a security advisory to address vulnerabilities in the following products:
Exploitation of these vulnerabilities could allow for authentication bypass and execution of arbitrary commands.
Official advisory ↗Cyber Security Agency of Singapore · English · CSA-SB-20240117Security Bulletin 17 Jan 2024
The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 17 Jan 2024, published on 17 January 2024. Open the linked bulletin for the product, severity and reference information published in that issue.
Official advisory ↗CERT-FR · French · CERTFR-2024-AVI-0085Multiples vulnérabilités dans les produits Ivanti
De multiples vulnérabilités ont été découvertes dans les produits
Ivanti. Elles permettent à un attaquant de provoquer une exécution de
code arbitraire à distance, un contournement de la politique de sécurité
et une élévation de privilèges.
Ivanti Connect Secure 및 Ivanti Policy Secure에서 발생하는 인증 우회 취약점(CVE-2023-46805) [1]
Official advisory ↗KISA KrCERT/CC · Korean · KNVD-6067美 CISA 발표 주요 Exploit 정보공유(Update. 2024-01-10)
Ivanti Connect Secure (ICS, formerly known as Pulse Connect Secure) and Ivanti Policy Secure gateways contain an authentication bypass vulnerability in the web component that allows an attacker to access restricted resources by bypassing control checks. This vulnerability can be leveraged in conjunction with CVE-2024-21887, a command injection vulnerability.
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.
o 참고사이트에 명시되어 있는 ‘Resolution’ 및 ‘Patch Availability’ 내용을 확인하여 보안 조치 적용 [1]
※ 현재 다운로드 포털을 통해 임시 완화 조치 파일 제공 [2]
※ 패치 버전은 1월 22일 주간부터 2월 19일 주간까지 버전 간 시차를 두고 출시 예정 [1]
- 자세한 정보는 해당 사이트를 통해 패치 일자 확인 필요
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.
04
Evidence and provenance
Published 12 Jan 2024 · Last source change 1 Oct 2026, 20:26 UTC · CWE-287 · Improper Authentication
CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
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-2023-50971
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
9.1R18 ≤ 9.1R18; 22.6R2 ≤ 22.6R2; 22.6R1 ≤ 22.6R1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
After
ICS: 9.1R18 ≤ 9.1R18, 22.6R2 ≤ 22.6R2; IPS: 9.1R18 ≤ 9.1R18, 22.6R1 ≤ 22.6R1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
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.