liftoff-sr CIPster TCP Encapsulation Receive Path encap.cc out-of-bounds (CVE-2026-76989) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-76989

liftoff-sr CIPster TCP Encapsulation Receive Path encap.cc out-of-bounds

Answer in brief

CVE-2026-76989 records a Unknown severity vulnerability in liftoff-sr CIPster TCP Encapsulation Receive Path encap.cc out-of-bounds. The current sources do not mark it as known exploited. The current feed maps liftoff-sr/CIPster (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 20, 2026Updated Aug 20, 2026Source checked Aug 20, 2026First seen by HOL Aug 20, 2026Material review Aug 20, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps liftoff-sr/CIPster (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
liftoff-sr/CIPstergeneric	1802525be27d33e19a9a83c163e331a1d13b1892	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for liftoff-sr/CIPster.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 20, 2026

Sources and claim methodology

Upstream source description

A security vulnerability has been detected in liftoff-sr CIPster 1802525be27d33e19a9a83c163e331a1d13b1892. This impacts an unknown function of the file source/src/enet_encap/encap.cc of the component TCP Encapsulation Receive Path. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is e8e9dba09bf56962807d3504b783ccdb6287f3e4. To fix this issue, it is recommended to deploy a patch.

Quoted source text, attributed separately from HOL analysis.