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CVE-2025-27901VulnerabilityPublished

CVE-2025-27901: IBM DB2 Recovery Expert for LUW · Improper Neutralization of HTTP Headers for Scripting Syntax

Affects IBM DB2 Recovery Expert for LUWSource CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
IBMDB2 Recovery Expert for LUWAffected
  • =5.5 Interim Fix 002
Fixed in–

CPE configurations (1)

  • cpe:2.3:a:ibm:db2_recovery_expert_for_luw:5.5:interim_fix_002:*:*:*:*:*:*

AI-suggested

Organizations should immediately assess their deployment of IBM DB2 Recovery Expert for LUW 5.5 Interim Fix 002 and plan to apply any forthcoming official patches from IBM as none are currently listed. In the interim, implement strict input validation and sanitization on HTTP headers at the network perimeter or within web application firewalls (WAFs) to block malformed HOST headers. Employ HTTP header security best practices such as setting Content Security Policy (CSP) headers, enabling HTTP Strict Transport Security (HSTS), and ensuring secure cookie attributes to mitigate session hijacking risks. Monitor network traffic for unusual or suspicious HTTP header patterns indicative of injection attempts. Conduct regular security assessments and penetration testing focused on HTTP header injection vectors. Additionally, restrict access to the DB2 Recovery Expert interface to trusted networks and users, and enable detailed logging and alerting to detect potential exploitation attempts early. Educate IT and security teams about this vulnerability to ensure rapid response and containment.

Description

IBM DB2 Recovery Expert for LUW 5.5 Interim Fix 002 IBM Db2 Recovery Expert for Linux, UNIX and Windows is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers.  This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.

References

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