CVE-2026-16687: IBM Power System E1180 (9080-heu) Firmware buffer overflow (CVSS 9.6)

Description

IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the ASMI web interface. An unauthenticated attacker with network access can send the FSP a malformed request, allowing arbitrary code execution, giving the attacker full control over the managed system, resulting in a confidentiality, integrity, and availability impact.

CVSS 3.1 breakdown

Attack vectorAdjacent

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeChanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

IBM Power System E1080 (9080-hex) Firmware≥ fw1060.00 < fw1060.81

IBM Power System E1180 (9080-heu) Firmware≥ fw1110.00 < fw1110.31 · fw1120.00

IBM Power System E950 (9040-mr9) Firmware≥ fw950.00 < fw950.h3

IBM Power System E980 (9080-m9s) Firmware≥ fw950.00 < fw950.h3

IBM Power System H922 (9223-22s) Firmware≥ fw950.00 < fw950.h3

IBM Power System H924 (9223-42s) Firmware≥ fw950.00 < fw950.h3

IBM Power System S914 (9009-41g) Firmware≥ fw950.00 < fw950.h3

IBM Power System S922 (9009-22g) Firmware≥ fw950.00 < fw950.h3

IBM Power System S924 (9009-42g) Firmware≥ fw950.00 < fw950.h3

Remediation

Fixed in

IBM Power System E1080 (9080-hex) Firmware≥ fw1060.81

IBM Power System E1180 (9080-heu) Firmware≥ fw1110.31

IBM Power System E950 (9040-mr9) Firmware≥ fw950.h3

IBM Power System E980 (9080-m9s) Firmware≥ fw950.h3

IBM Power System H922 (9223-22s) Firmware≥ fw950.h3

IBM Power System H924 (9223-42s) Firmware≥ fw950.h3

IBM Power System S914 (9009-41g) Firmware≥ fw950.h3

IBM Power System S922 (9009-22g) Firmware≥ fw950.h3

IBM Power System S924 (9009-42g) Firmware≥ fw950.h3

Patch & vendor advisories

https://www.ibm.com/support/pages/node/7283893

References

https://www.ibm.com/support/pages/node/7283893Vendor Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-16687 being actively exploited?

CVE-2026-16687 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.35%.

How severe is CVE-2026-16687?

CVE-2026-16687 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.35% probability of exploitation.

Which products are affected by CVE-2026-16687?

Affected products include IBM Power System E1080 (9080-hex) Firmware, IBM Power System E1180 (9080-heu) Firmware, IBM Power System E950 (9040-mr9) Firmware, IBM Power System E980 (9080-m9s) Firmware, IBM Power System H922 (9223-22s) Firmware, and 4 more.

How do I fix CVE-2026-16687?

Upgrade affected software to a fixed version, for example IBM Power System E1080 (9080-hex) Firmware fw1060.81, IBM Power System E1180 (9080-heu) Firmware fw1110.31, IBM Power System E950 (9040-mr9) Firmware fw950.h3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-16687 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation works Book a demo