How severe is CVE-2018-1992?

CVE-2018-1992 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1992 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1992?

CVE-2018-1992 primarily affects Ibm Power System S922 (9009-22a) Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1992?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1992 published?

CVE-2018-1992 was published on 2019-03-21 and last updated on 2026-06-17.

CVE-2018-1992

CVE-2018-1992 is a medium-severity vulnerability in Ibm Power System S922 (9009-22a) Firmware with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 6.9
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ibm Power System S922 (9009-22a) Firmware
Published: 2019-03-21
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-1992?: 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.
How severe is CVE-2018-1992?: CVE-2018-1992 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1992 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1992?: CVE-2018-1992 primarily affects Ibm Power System S922 (9009-22a) Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1992?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1992 published?: CVE-2018-1992 was published on 2019-03-21 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:ibm:power_system_s922_\(9009-22a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_h922_\(9223-22h\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s914_\(9009-41a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_s924_\(9009-42a\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_h924_\(9223-42h\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_l922_\(9008-22l\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_ac922_\(8335-gtg\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_ac922_\(8335-gth\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_ac922_\(8335-gtx\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_lc921_\(9006-12p\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ibm:power_system_lc922_\(9006-22p\)_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Ibm Power System S922 (9009-22a) Firmware

CVE-2024-45656 — Critical (CVSS 9.8): IBM Flexible Service Processor (FSP) FW860.00 through FW860.B3, FW950.00 through FW950.C0, FW1030.00 through FW1030.61,…

All CVEs affecting Ibm Power System S922 (9009-22a) Firmware →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →