CVE-2026-16839 json
Vulnerabilities in IBM AIX and PowerVM VIOS
published 2026-08-19 2 mo ago modified 2026-10-26 14 d ago also EUVD-2026-62728
- cvss
- 9.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to obtain sensitive information due to an integer underflow in the IPv4 IP-options parser.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H |
Affected products
- IBM AIX
- IBM PowerVM VIOS
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
ibm.com
/support/pages/node/7283858
vendor-advisory, patch
Sources
- CVE List CVE-2026-16839
- NVD CVE-2026-16839
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.