6.0
MEDIUM
CVSS 3.1
CVE-2026-15961
Power System Information Disclosure
Overview
Description
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings.
Details
INFO
Published Date :
Aug. 19, 2026, 3:16 p.m.
Last Modified :
Aug. 25, 2026, 8:29 p.m.
Remotely Exploit :
No
Source :
[email protected]
Impact
Affected Products
The following products are affected by CVE-2026-15961
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 9a959283-ebb5-44b6-b705-dcc2bbced522 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
Update IBM PowerVM Hypervisor firmware to the latest available version to fix format string vulnerabilities.
- Update IBM PowerVM Hypervisor firmware to the latest version.
- Apply all available security patches and updates.
- Monitor systems for any unusual activity.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-15961.
| URL | Resource |
|---|---|
| https://www.ibm.com/support/pages/node/7283228 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-15961 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-15961
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-15961 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-15961 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1122_(9824-22a)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_s1122_(9824-22a)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_s1122_(9824-22a):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1124_(9824-42a)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_s1124_(9824-42a)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_s1124_(9824-42a):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1122s_(9824-22b)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_s1122s_(9824-22b)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_s1122s_(9824-22b):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1114_(9824-41b)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_s1114_(9824-41b)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_s1114_(9824-41b):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_l1122_(9856-22h)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_l1122_(9856-22h)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_l1122_(9856-22h):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_l1124_(9856-42h)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_l1124_(9856-42h)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_l1124_(9856-42h):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_e1150_(9043-mru)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_e1150_(9043-mru)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_e1150_(9043-mru):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1112_(9242-21b)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_s1112_(9242-21b):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1112_(9242-21t)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_s1112_(9242-21t):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_e1080_(9080-hex)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_e1080_(9080-hex):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1022_(9105-22a)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_s1022_(9105-22a):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1024_(9105-42a)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_s1024_(9105-42a):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1022s_(9105-22b)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_s1022s_(9105-22b):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1014_(9105-41b)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_s1014_(9105-41b):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_l1022_(9786-22h)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_l1022_(9786-22h):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_l1024_(9786-42h)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_l1024_(9786-42h):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_e1050_(9043-mrx)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_e1050_(9043-mrx):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_s1012_(9028-21b)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1060.00 up to (excluding) fw1060.81 OR cpe:2.3:h:ibm:power_system_s1012_(9028-21b):-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ibm:power_system_e1180_(9080-heu)_firmware:*:*:*:*:*:*:*:* versions from (including) fw1110.00 up to (excluding) fw1110.31 *cpe:2.3:o:ibm:power_system_e1180_(9080-heu)_firmware:fw1120.00:*:*:*:*:*:*:* OR cpe:2.3:h:ibm:power_system_e1180_(9080-heu):-:*:*:*:*:*:*:* Added Reference Type IBM Corporation: https://www.ibm.com/support/pages/node/7283228 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 20, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-15961', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-20T14:19:20.884588Z'} -
CVE Modified by [email protected]
Aug. 19, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.30:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.30.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.80:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.80.0:*:*:*:*:*:*:*'], 'vendor': 'IBM', 'product': 'PowerVM Hypervisor', 'versions': [{'status': 'affected', 'version': 'FW1120.00'}, {'status': 'affected', 'version': 'FW1110.00', 'versionType': 'semver', 'lessThanOrEqual': 'FW1110.30'}, {'status': 'affected', 'version': 'FW1060.00', 'versionType': 'semver', 'lessThanOrEqual': 'FW1060.80'}]}] [{'cpes': ['cpe:2.3:o:ibm:power_systems_firmware:fw1120.00:*:*:*:*:*:*:*', 'cpe:2.3:o:ibm:power_systems_firmware:fw1110.00:*:*:*:*:*:*:*', 'cpe:2.3:o:ibm:power_systems_firmware:fw1110.30:*:*:*:*:*:*:*', 'cpe:2.3:o:ibm:power_systems_firmware:fw1060.00:*:*:*:*:*:*:*', 'cpe:2.3:o:ibm:power_systems_firmware:fw1060.80:*:*:*:*:*:*:*'], 'vendor': 'IBM', 'product': 'PowerVM Hypervisor', 'versions': [{'status': 'affected', 'version': 'FW1120.00'}, {'status': 'affected', 'version': 'FW1110.00', 'versionType': 'semver', 'lessThanOrEqual': 'FW1110.30'}, {'status': 'affected', 'version': 'FW1060.00', 'versionType': 'semver', 'lessThanOrEqual': 'FW1060.80'}]}] Changed Description IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings. IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings. -
New CVE Received by [email protected]
Aug. 19, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.30:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1110.30.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.80:*:*:*:*:*:*:*', 'cpe:2.3:a:ibm:powervm_hypervisor:fw1060.80.0:*:*:*:*:*:*:*'], 'vendor': 'IBM', 'product': 'PowerVM Hypervisor', 'versions': [{'status': 'affected', 'version': 'FW1120.00'}, {'status': 'affected', 'version': 'FW1110.00', 'versionType': 'semver', 'lessThanOrEqual': 'FW1110.30'}, {'status': 'affected', 'version': 'FW1060.00', 'versionType': 'semver', 'lessThanOrEqual': 'FW1060.80'}]}] Added Description IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings. Added CVSS V3.1 AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H Added CWE CWE-134 Added Reference https://www.ibm.com/support/pages/node/7283228
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.