CVE-2018-1992
The IBM Power 9 OP910, OP920, and FW910 boot firmware's bootloader is responsible for loading and...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
6.4
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.
- Record
CVE-2018-1992- CVSS 3.0
- 6.4 Medium
CVSS:3.0/PR:H/AV:L/S:U/I:H/UI:N/AC:H/A:H/C:H/RC:C/E:U/RL:O - Updated
- 2026-11-02
EUVDEUVD-2018-12571
6.4
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.
- Record
EUVD-2018-12571- CVSS 3.0
- 6.4 Medium
CVSS:3.0/PR:H/AV:L/S:U/I:H/UI:N/AC:H/A:H/C:H/RC:C/E:U/RL:O - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-phhh-x2xq-mff8
6.4
The IBM Power 9 OP910, OP920, and FW910 boot firmware's bootloader is responsible for loading and...
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.
- Record
GHSA-phhh-x2xq-mff8- CVSS 3.0
- 6.4 Medium
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
NVD
6.4
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.
- Record
CVE-2018-1992- CVSS 3.0
- 6.4 Medium
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.9 Medium
AV:L/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-119
- Updated
- 2026-11-02
Affected products
- ibm power 9 systems
- ibm power system ac922 \(8335-gtg\) firmware
- ibm power system ac922 \(8335-gth\) firmware
- ibm power system ac922 \(8335-gtx\) firmware
- ibm power system h922 \(9223-22h\) firmware
- ibm power system h924 \(9223-42h\) firmware
- ibm power system l922 \(9008-22l\) firmware
- ibm power system lc921 \(9006-12p\) firmware
- ibm power system lc922 \(9006-22p\) firmware
- ibm power system s914 \(9009-41a\) firmware
- ibm power system s922 \(9009-22a\) firmware
- ibm power system s924 \(9009-42a\) firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1992 is a medium vulnerability (CVSS 6.4) in Ibm Power 9 Systems, published March 21, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 29th percentile. No source names a fixed version.