CVE-2025-36376Network attack vector

User impersonation via expired session reuse

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 users. The application leaves a session valid after it expires instead of invalidating it; IBM has not disclosed a narrower component or request path. Exploitation requires an authenticated account and retained expired session material; IBM reports impersonation but does not detail which actions become available.

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

What happened

Insufficient session expiration in IBM Security QRadar EDR 3.12 through 3.12.23 allows remote authenticated users to impersonate users. The application leaves a session valid after it expires instead of invalidating it; IBM has not disclosed a narrower component or request path. Exploitation requires an authenticated account and retained expired session material; IBM reports impersonation but does not detail which actions become available.

The record

CVE
CVE-2025-36376
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

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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

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

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
T1550.004Web 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

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Your stack

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