Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow (CVE-2026-93962) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93962

Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow

Answer in brief

CVE-2026-93962 records a Unknown severity vulnerability in Kamailio CDP Diameter Receiver receiver.c shm_malloc heap-based overflow. The current sources do not mark it as known exploited. The current feed maps n/a/Kamailio (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 Sep 20, 2026Updated Sep 20, 2026Source checked Sep 20, 2026First seen by HOL Sep 20, 2026Material review Sep 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 n/a/Kamailio (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
n/a/Kamailiogeneric	5.8.0 \|\| 5.8.1 \|\| 5.8.2 \|\| 5.8.3 \|\| 5.8.4 \|\| 5.8.5 \|\| 5.8.6 \|\| 5.8.7 \|\| 5.8.8 \|\| 6.0.0 \|\| 6.0.1 \|\| 6.0.2 \|\| 6.0.3 \|\| 6.0.4 \|\| 6.0.5 \|\| 6.0.6 \|\| 6.0.7 \|\| 6.1.0 \|\| 6.1.1 \|\| 6.1.2 \|\| 6.1.3 \|\| 6.1.4 \|\| 6.2.0-dev1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for n/a/Kamailio.
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
Sep 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 20, 2026

Sources and claim methodology

Upstream source description

A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b57d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should upgrade the affected component.

Quoted source text, attributed separately from HOL analysis.