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VulnerabilityPublished

CVE-2026-6936: IBM · Uncontrolled Recursion

Affects IBMSource CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMAffected
  • >=7.6 <=11.5.9
  • >=7.5 <=12.1.4
  • =7.4
  • =7.3
Fixed in–

CPE configurations (8)

  • cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*

AI-suggested

Until an official fix is released, restrict access to the ILE compiler to trusted users only and monitor for unusual compilation activity. No official remediation or temporary workaround is currently documented.

Description

IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a denial-of-service attack due to uncontrolled recursion in the Integrated Language Environment (ILE) compiler. An authenticated attacker could exploit this vulnerability by compiling specially crafted source code containing a specific combination of statements.

References

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