Dashboard / CVE-2026-56116

CVE-2026-56116

HIGH
MEDIUM Priority: 0.02 BB Relevance: 59/100
Published: 2026-06-23 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: X
AT: None
VC: None
VI: None
VA: High

Description

dhcpcd through 10.3.2, fixed in commit 708b4a5, contains a memory leak vulnerability in the IPv6 Router Advertisement route information handling that allows an unauthenticated same-link attacker to cause denial of service by sending crafted Router Advertisements. Attackers can repeatedly send Router Advertisements containing Route Information options with a lifetime of zero, triggering unfreed allocations in routeinfo_findalloc() that cause linear memory exhaustion and eventual daemon crash.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
dhcpcd_project dhcpcd 10.0.7 – 10.5.0

References & Advisories (2)

Bug Bounty Relevance

59 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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

EPSS — Exploitation Probability

0.29%
Raw Score 0.002880
Percentile 21.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00288
2026-10-28
0.00288

Intelligence Sources

nvd ref →

External Links