CVE-2025-27898Network attack vector

User impersonation via unexpired timed-out sessions

Published Feb 17, 2026 · Updated Feb 17, 2026

Insufficient session expiration in IBM Db2 Recovery Expert 5.5 Interim Fix 002 allows remote authenticated users to impersonate other users. The session-management layer leaves an authenticated session valid after its timeout instead of invalidating it server-side. An existing authenticated session and network access are required, and successful reuse grants the impersonated user's application privileges.

CVSS severity6.3
Medium
EPSS probability0.16%
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 Db2 Recovery Expert 5.5 Interim Fix 002 allows remote authenticated users to impersonate other users. The session-management layer leaves an authenticated session valid after its timeout instead of invalidating it server-side. An existing authenticated session and network access are required, and successful reuse grants the impersonated user's application privileges.

The record

CVE
CVE-2025-27898
Published
Feb 17, 2026
Updated
Feb 17, 2026
Vendor
IBM
Product
Db2 Recovery Expert
Classifications
CWE-613, T1078
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=5.5 Interim Fix 002

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Db2 Recovery Expertversion=5.5 Interim Fix 002

Published CVSS scores

6.3IBMCVSS: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.

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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
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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