Cyber Resilience

CVE-2025-52689

Auth Bypass

Published
16 July 2025
Modified
17 June 2026
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.13 96th percentile
Risk Priority 81 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2025-52689 is a critical-severity Session Fixation (CWE-384) vulnerability in Uhg (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Steal Web Session Cookie (T1539); ranked in the top 4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SC-23 (Session Authenticity) and 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-2025-52689 is a session fixation vulnerability, tracked under CWE-384, that affects Alcatel-Lucent OmniAccess Stellar wireless access points. The flaw permits an unauthenticated remote attacker to spoof a login request and obtain a valid administrator session identifier, which can then be used to alter access-point behavior. It carries a CVSS 3.1 base score of 9.8 reflecting network attack vector, low complexity, and no required credentials or user interaction.

An attacker positioned on the network can exploit the issue without authentication to hijack an administrative session and reconfigure the affected access point. Successful exploitation grants full control over device settings and potentially connected clients.

Public advisories from Alcatel-Lucent Enterprise and the Singapore CSA, along with a technical analysis and proof-of-concept code, outline mitigation steps including firmware updates and configuration hardening; the referenced vendor bulletin SA-N0150 specifically addresses this and related issues in the OmniAccess Stellar product line.

EPSS for the CVE has remained flat at 0.0157 since disclosure with no material upward movement.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Successful exploitation of the vulnerability could allow an unauthenticated attacker to obtain a valid session ID with administrator privileges by spoofing the login request, potentially allowing the attacker to modify the behaviour of the access point.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
T1550.004 Web Session Cookie Lateral Movement
Adversaries can use stolen session cookies to authenticate to web applications and services.
T1606 Forge Web Credentials Credential Access
Adversaries may forge credential materials that can be used to gain access to web applications or Internet services.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-25101Shared CWE-384
CVE-2026-41839Shared CWE-384
CVE-2026-13707Shared CWE-384
CVE-2023-3192Shared CWE-384
CVE-2024-48929Shared CWE-384
CVE-2023-24477Shared CWE-384
CVE-2025-45949Shared CWE-384
CVE-2024-42345Shared CWE-384
CVE-2026-40082Shared CWE-384
CVE-2024-0351Shared CWE-384

Affected Assets

Uhg
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V4.4.4
  • V7.6.2

Mitigating Controls (NIST 800-53 r5) AI

Requires protection of session authenticity, which directly stops an attacker from using a stolen or fixed session identifier after authentication.

Limits the lifetime of any session (fixed or not), thereby reducing the window during which a stolen identifier remains usable.

Enforces that only properly authorized (i.e., freshly authenticated) sessions can access resources, making a pre-existing fixed session ID unusable.

Forces re-authentication under defined conditions, which should result in issuance of a fresh session identifier and invalidation of any prior one.

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.

PR.AA-03 mostly match
prevents

Proper authentication processes must invalidate prior session identifiers to prevent fixation attacks.

PR.AA-01 partial match
prevents

Managing identities and credentials includes handling session identifiers as temporary credentials that must be invalidated on re-authentication.

PR.AA-04 partial match
prevents

Protecting and verifying identity assertions encompasses secure handling and regeneration of session tokens.

PR.PS-01 partial match
prevents

Configuration baselines can enforce session regeneration and timeout settings that block fixation.

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.

finds

Security testing can detect session-fixation issues, yet the weakness absence does not replace comprehensive testing.

degrades

Access-control policy can mandate session invalidation on re-authentication, but does not prescribe the technical mechanism.

degrades

Identity-management procedures can require new session tokens after login, yet the control is broader than session handling.

degrades

Authentication-information rules can include session-token lifecycle requirements, but the control focuses on credential management.

prevents

Secure-SDLC requirement can embed session-fixation checks, but eliminating the weakness does not satisfy the full SDLC control.

prevents

Application-security requirements can specify session handling, yet the weakness fix alone does not meet the broader requirement.

References