CVE-2026-18681

This Power System Buffer Overflow

MEDIUM
6.8
CVSS Score
Published: August 19, 2026 at 06:36 PM UTC
Updated: August 25, 2026 at 08:40 PM UTC
19 products affected across 1 vendorPower System E1180 (9080-heu ) FirmwarePower System E1080 (9080-hex ) FirmwarePower System H924 (9223-42s ) Firmware

Using Server Firmware by IBM?

Get instant alerts when new vulnerabilities affect Server Firmware - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

IBM Server 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 FSP firmware update process. An attacker with authenticated administrator-level access to the FSP can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-e1080-9080-hex (same device)
fw1110.00 ≤ v < fw1110.31fw1120.00
Affected range stops below fw1110.31, so it looks safe — our inference, not a vendor statement
ibm-power-system-e1180-9080-heu (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-e950-9040-mr9 (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-e980-9080-m9s (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-h922-9223-22s (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-h924-9223-42s (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-s914-9009-41g (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-s922-9009-22g (same device)
fw950.00 ≤ v < fw950.h3
Affected range stops below fw950.h3, so it looks safe — our inference, not a vendor statement
ibm-power-system-s924-9009-42g (same device)
FW1060.00 ≤ v ≤ FW1060.80FW1110.00 ≤ v ≤ FW1110.30FW950.00 ≤ v ≤ FW950.H2FW1060.00FW1110.00FW1120.00FW950.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://www.ibm.com/support/pages/node/7283899

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMibm
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-121

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card