CVE-2026-76987

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 22.8% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-08-24.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-20 12:15Z15 DAYS AGO

Last updated

2026-08-20 18:02Z15 DAYS AGO

Reserved

2026-08-20

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.2

Document digest

2936b5275e2a9f47381eccc74cfffc224743d10f1f27a8d0739aa1b034aa99b0

• vuldb.comVDB-393610 | liftoff-sr CIPster Generic Attribute Logic ciptypes.h SetAttrData memory corruptionhttps://vuldb.com/vuln/393610vdb-entrytechnical-description
• vuldb.comVDB-393610 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/393610/ctisignaturepermissions-required
• vuldb.comCVE-2026-76987 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-76987third-party-advisory
• vuldb.comSubmit #880100 | liftoff-sr CIPster master branch (reproduced on 1802525be27d33e19a9a83c163e331a1d13b1892) Out-of-bounds Read/Writehttps://vuldb.com/submit/880100third-party-advisory
• github.comhttps://github.com/liftoff-sr/CIPster/issues/47exploitissue-tracking
• github.comhttps://github.com/liftoff-sr/CIPster/commit/e745d9d4a8ca3a13689066983a1269fe1e567674patch
• github.comhttps://github.com/liftoff-sr/CIPster/product