Memory corruption in IBM Power 9 Systems
Priority LOW 28CWE-119Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
The IBM Power 9 OP910, OP920, and FW910 boot firmware's bootloader is responsible for loading and validating the initial boot firmware image that drives the rest of the system's hardware initialization. The bootloader firmware contains a buffer overflow vulnerability such that, if an attacker were able to replace the initial boot firmware image with a very carefully crafted and sufficiently large, malicious replacement, it could cause the bootloader, during the load of that image, to overwrite its own instruction memory and circumvent secure boot protections, install trojans, etc. IBM X-Force ID: 154345.
Why it matters now
EPSS 0.00353 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | Power 9 Systems | FW910; OP910; OP920 | — | No fix listed | CNA |
- Power 9 Systems VendorIBM Affected FW910; OP910; OP920 Fixed in — No fix listed CNA
CPE configurations NVD · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:ibm:power_system_s922_\(9009-22a\)_firmware:*:*:*:*:*:*:*:* | before fw910.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_s922_\(9009-22a\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_h922_\(9223-22h\)_firmware:*:*:*:*:*:*:*:* | before fw910.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_h922_\(9223-22h\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_s914_\(9009-41a\)_firmware:*:*:*:*:*:*:*:* | before fw910.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_s914_\(9009-41a\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_s924_\(9009-42a\)_firmware:*:*:*:*:*:*:*:* | before fw910.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_s924_\(9009-42a\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_h924_\(9223-42h\)_firmware:*:*:*:*:*:*:*:* | before fw910.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_h924_\(9223-42h\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
- cpe:2.3:o:ibm:power_system_s922_\(9009-22a\)_firmware:*:*:*:*:*:*:*:* Versions before fw910.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_s922_\(9009-22a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_h922_\(9223-22h\)_firmware:*:*:*:*:*:*:*:* Versions before fw910.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_h922_\(9223-22h\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_s914_\(9009-41a\)_firmware:*:*:*:*:*:*:*:* Versions before fw910.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_s914_\(9009-41a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_s924_\(9009-42a\)_firmware:*:*:*:*:*:*:*:* Versions before fw910.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_s924_\(9009-42a\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_h924_\(9223-42h\)_firmware:*:*:*:*:*:*:*:* Versions before fw910.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_h924_\(9223-42h\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:ibm:power_system_l922_\(9008-22l\)_firmware:*:*:*:*:*:*:*:* | before fw910.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_l922_\(9008-22l\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_ac922_\(8335-gtg\)_firmware:*:*:*:*:*:*:*:* | before op910.30 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_ac922_\(8335-gtg\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_ac922_\(8335-gth\)_firmware:*:*:*:*:*:*:*:* | before op920.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_ac922_\(8335-gth\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_ac922_\(8335-gtx\)_firmware:*:*:*:*:*:*:*:* | before op920.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_ac922_\(8335-gtx\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_lc921_\(9006-12p\)_firmware:*:*:*:*:*:*:*:* | before op920.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_lc921_\(9006-12p\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:power_system_lc922_\(9006-22p\)_firmware:*:*:*:*:*:*:*:* | before op920.10 | Vulnerable | IBM |
| cpe:2.3:h:ibm:power_system_lc922_\(9006-22p\):-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
- cpe:2.3:o:ibm:power_system_l922_\(9008-22l\)_firmware:*:*:*:*:*:*:*:* Versions before fw910.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_l922_\(9008-22l\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_ac922_\(8335-gtg\)_firmware:*:*:*:*:*:*:*:* Versions before op910.30 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_ac922_\(8335-gtg\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_ac922_\(8335-gth\)_firmware:*:*:*:*:*:*:*:* Versions before op920.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_ac922_\(8335-gth\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_ac922_\(8335-gtx\)_firmware:*:*:*:*:*:*:*:* Versions before op920.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_ac922_\(8335-gtx\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_lc921_\(9006-12p\)_firmware:*:*:*:*:*:*:*:* Versions before op920.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_lc921_\(9006-12p\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:power_system_lc922_\(9006-22p\)_firmware:*:*:*:*:*:*:*:* Versions before op920.10 Vulnerable ·IBM
- cpe:2.3:h:ibm:power_system_lc922_\(9006-22p\):-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-1992
- 2026-10-03 Alias added: GHSA-phhh-x2xq-mff8
References
More IBM Power System Ac922 (8335-gtg) Firmware vulnerabilities
- TI-2021-16399 Cross-site scripting in IBM OPENBMC CVSS 3.1MEDIUM 6.1
- TI-2022-06771 IBM OpenBMC denial of service CVSS 3.1MEDIUM 4.9
- TI-2021-10531 Unrestricted file upload in IBM Power 9 AC922 CVSS 3.1MEDIUM 4.9
Sources
- CVE-2018-1992 · CVE Program
- CVE-2018-1992 · NVD
- FIRST EPSS
- GHSA-phhh-x2xq-mff8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences