CVE-2026-18849
MEDIUM 6.8IBM OpenBMC FW1060.00 through FW1060.80 is affected by a vulnerability in the BMC firmware update process. An attacker with authenticated administrator-level access to the BMC 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 · 15th 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-2026-18849/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-2026-18849/poc.json
Affected
Vendors Ibm
Products Openbmc Power System E1050 \(9043 Mrx\) Firmware Power System E1050 \(9043 Mrx\) Power System L1022 \(9786 22h\) Firmware Power System L1022 \(9786 22h\) Power System L1024 \(9786 42h\) Firmware Power System L1024 \(9786 42h\) Power System S1012 \(9028 21b\) Firmware Power System S1012 \(9028 21b\) Power System S1014 \(9105 41b\) Firmware Power System S1014 \(9105 41b\) Power System S1022 \(9105 22a\) Firmware
Weakness (CWE)
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
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 | Openbmc | ≥ fw1060.00 and ≤ fw1060.80 |
| Ibm | Power System E1050 \(9043 Mrx\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System L1022 \(9786 22h\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System L1024 \(9786 42h\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System S1012 \(9028 21b\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System S1014 \(9105 41b\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System S1022 \(9105 22a\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System S1022s \(9105 22b\) Firmware | ≥ fw1060.00 and < fw1060.81 |
| Ibm | Power System S1024 \(9105 42a\) Firmware | ≥ fw1060.00 and < fw1060.81 |
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