CVE-2025-36377Network attack vector

User impersonation via uninvalidated expired sessions

Published Feb 17, 2026 · Updated Feb 17, 2026

Insufficient session expiration in IBM Security QRadar EDR 3.12 through 3.12.23 allows remote authenticated users to impersonate other users. The application leaves a session valid after its configured expiration instead of invalidating it; IBM has not disclosed the affected endpoint or token-handling path. An attacker must already be authenticated and retain access to another user's expired session, enabling actions with that user's privileges.

CVSS severity6.3
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Insufficient session expiration in IBM Security QRadar EDR 3.12 through 3.12.23 allows remote authenticated users to impersonate other users. The application leaves a session valid after its configured expiration instead of invalidating it; IBM has not disclosed the affected endpoint or token-handling path. An attacker must already be authenticated and retain access to another user's expired session, enabling actions with that user's privileges.

The record

CVE
CVE-2025-36377
Published
Feb 17, 2026
Updated
Feb 17, 2026
Vendor
IBM
Product
IBM QRadar EDR
Classifications
CWE-613, T1550.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.12 <=3.12.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM QRadar EDRversion=3.12 <=3.12.23

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3IBM CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo