CVE-2024-13996
Nagios Xi ≤ 2024
Raw vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-13996 is a critical-severity Insufficient Session Expiration (CWE-613) vulnerability in Nagios Nagios Xi. Its CVSS base score is 9.2 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 36% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to AC-12 (Session Termination) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2024-13996 is an insufficient session expiration vulnerability (CWE-613) in Nagios XI versions prior to 2024R1.1.3. When a user's password is changed, the software fails to invalidate all other active sessions associated with that user. This allows pre-existing sessions, including those potentially compromised by an attacker, to remain valid post-credential update, enabling continued unauthorized access.
The vulnerability carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating it is exploitable over the network with low complexity, no required privileges or user interaction, and high impacts on confidentiality, integrity, and availability. An attacker with prior access to a valid user session—such as through session hijacking, theft, or fixation—can maintain access to sensitive user data and perform unauthorized actions even after the legitimate user changes their password.
Advisories recommend upgrading to Nagios XI 2024R1.1.3 or later to address the issue, as detailed in the Nagios changelog (https://www.nagios.com/changelog/nagios-xi/), security products page (https://www.nagios.com/products/security/#nagios-xi), and VulnCheck advisory (https://www.vulncheck.com/advisories/nagios-xi-session-not-invalidated-after-password-change).
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-55047
Vulnerability Data
Nagios XI versions prior to 2024R1.1.3 did not invalidate all other active sessions for a user when that user's password was changed. As a result, any pre-existing sessions (including those potentially controlled by an attacker) remained valid after a credential…
more
update. This insufficient session expiration could allow continued unauthorized access to user data and actions even after a password change.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
AC-12 directly requires automatic session termination after a defined period, structurally preventing reuse of expired session identifiers.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Credential lifecycle management directly includes enforcing session expiration to prevent reuse.
Authentication mechanisms can incorporate session timeout checks but do not inherently address expiration policy.
Authorization policy enforcement and review covers terminating stale sessions to limit access scope.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.