CVE-2026-18681
MEDIUM 6.8IBM Server Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP firmware update process. An attacker with authenticated administrator-level access to the FSP can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 10th percentile
Impact if exploited
6.8CVSS 3.1 · MEDIUM
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ⚠Access: Must sit on the same / adjacent network
- ⚠Privileges: Requires an admin / high-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ 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-2026-18681/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-2026-18681/poc.json
Affected
Vendors Ibm
Products Server Firmware Power System S922 \(9009 22g\) Firmware Power System S922 \(9009 22g\) Power System H922 \(9223 22s\) Firmware Power System H922 \(9223 22s\) Power System S914 \(9009 41g\) Firmware Power System S914 \(9009 41g\) Power System S924 \(9009 42g\) Firmware Power System S924 \(9009 42g\) Power System H924 \(9223 42s\) Firmware Power System H924 \(9223 42s\) Power System E950 \(9040 Mr9\) Firmware
Weakness (CWE)
- CWE-121: Stack-based Buffer Overflow
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Ibm | Power System S922 \(9009 22g\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System H922 \(9223 22s\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System S914 \(9009 41g\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System S924 \(9009 42g\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System H924 \(9223 42s\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System E950 \(9040 Mr9\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System E980 \(9080 M9s\) Firmware | ≥ fw950.00 and < fw950.h3 |
| Ibm | Power System E1080 \(9080 Hex\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System E1180 \(9080 Heu\) Firmware | ≥ fw1110.00 and < fw1110.31 |
| Ibm | Power System E1180 \(9080 Heu\) Firmware | fw1120.00 |
All CVSS metrics
- MEDIUM 6.8 v3.1 · CNA Primary
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - MEDIUM 6.8 v3.1 · NVD Secondary
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H