CVE-2026-16890
LOW 3.6IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to obtain sensitive information or cause a denial of service due to an integer overflow.
NO EXPLOITATION SIGNALS
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 2nd percentile
○ In CISA KEV
○ Public exploit / PoC
Impact if exploited
3.6CVSS 3.1 · LOW
- ConfidentialityLow
- IntegrityNone
- AvailabilityLow
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ⚠Complexity: Needs a race window or specific setup
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-16890/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-16890/poc.json
Weakness (CWE)
- CWE-190: Integer Overflow or Wraparound
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Ibm | Vios | ≥ 4.1.0 and < 4.1.0.50 |
| Ibm | Vios | ≥ 4.1.1.0 and < 4.1.1.30 |
| Ibm | Vios | ≥ 4.1.2.0 and < 4.1.2.20 |
| Ibm | Aix | ≥ 7.2.5 and ≤ 7.2.5.212 |
| Ibm | Aix | ≥ 7.3.2 and ≤ 7.3.2.5 |
| Ibm | Aix | ≥ 7.3.3 and ≤ 7.3.3.2 |
| Ibm | Aix | ≥ 7.3.4 and ≤ 7.3.4.1 |
All CVSS metrics
- LOW 3.6 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L - LOW 3.6 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L