CVE-2018-1992

mediumpriority · track · 26EPSS 0.004 · 29 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.35% (29th) EPSS

CVSS 6.9 · medium

Is it mine?

14 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.9mediumAV:L/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.4 · impact 10

v3.06.4mediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.5 · impact 5.9

v3.06.4mediumCVSS:3.0/PR:H/AV:L/S:U/I:H/UI:N/AC:H/A:H/C:H/RC:C/E:U/RL:Osecondary · ENISA EU

v3.06.4mediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@us.ibm.com USexploitability 0.5 · impact 5.9

v3.05.9mediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

affected products (14)

Products and version ranges known to be affected.

IBM Power 9 Systems≤ OP920enisa_euvdEU
IBM Power 9 Systems≤ FW910enisa_euvdEU
IBM Power 9 Systems≤ OP910enisa_euvdEU
ibm power system ac922 (8335-gtg) firmware< op910.30nvdUScpe:2.3:o:ibm:power_system_ac922_\(8335-gtg\)_firmware:*:*:*:*:*:*:*:*
ibm power system ac922 (8335-gth) firmware< op920.10nvdUScpe:2.3:o:ibm:power_system_ac922_\(8335-gth\)_firmware:*:*:*:*:*:*:*:*
ibm power system ac922 (8335-gtx) firmware< op920.10nvdUScpe:2.3:o:ibm:power_system_ac922_\(8335-gtx\)_firmware:*:*:*:*:*:*:*:*
ibm power system h922 (9223-22h) firmware< fw910.10nvdUScpe:2.3:o:ibm:power_system_h922_\(9223-22h\)_firmware:*:*:*:*:*:*:*:*
ibm power system h924 (9223-42h) firmware< fw910.10nvdUScpe:2.3:o:ibm:power_system_h924_\(9223-42h\)_firmware:*:*:*:*:*:*:*:*
ibm power system l922 (9008-22l) firmware< fw910.10nvdUScpe:2.3:o:ibm:power_system_l922_\(9008-22l\)_firmware:*:*:*:*:*:*:*:*
ibm power system lc921 (9006-12p) firmware< op920.10nvdUScpe:2.3:o:ibm:power_system_lc921_\(9006-12p\)_firmware:*:*:*:*:*:*:*:*
ibm power system lc922 (9006-22p) firmware< op920.10nvdUScpe:2.3:o:ibm:power_system_lc922_\(9006-22p\)_firmware:*:*:*:*:*:*:*:*
ibm power system s914 (9009-41a) firmware< fw910.10nvdUScpe:2.3:o:ibm:power_system_s914_\(9009-41a\)_firmware:*:*:*:*:*:*:*:*
ibm power system s922 (9009-22a) firmware< fw910.10nvdUScpe:2.3:o:ibm:power_system_s922_\(9009-22a\)_firmware:*:*:*:*:*:*:*:*
ibm power system s924 (9009-42a) firmware< fw910.10nvdUScpe:2.3:o:ibm:power_system_s924_\(9009-42a\)_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-03-21modified 2026-06-17

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+21038 more

references (11)

External citations — patches, advisories, analysis.

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