PGV-2634741

Disclosed on May 11, 2026 (updated May 12, 2026)

Vulnerability Overview

PGV-2634741 is a category 2 vulnerabilty that affects debian/dnsmasq source, versions *, < 2.90-4~deb12u2, < 2.91-1+deb13u1, *

CVSS Score: 8.4 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Risk Assessment

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The risk assessment shows that this vulnerability is exlpoited by a no attacker (theoretical scenario). This attack scenario is theoretical and does not correspond to a realistic attacker profile.

The impact is contained to the application. Exploitation remains confined to the application and cannot affect the host environment or external systems.

The threat damage is caused by a denial of service. Exploitation can completely deny access to the application, resulting in a full outage.is caused by a data breach. Exploitation can result in full access to data within the system.is caused by data tampering. Exploitation can result in modification of any data (authorized or not) within the system.

Vulnerability Details

A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.

Additional References

Your Risk Profile

Network Exposure	External Accessable from the public internet
Access Interface	WebBrowser Primarily web-based applications
Service Outage	Disruptive Operations would be impacted
Data Breach	Disruptive Operations would be impacted
Data Tampering	Disruptive Operations would be impacted
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Additional Identifiers

DEBIAN-CVE-2026-4892