CVE-2026-7736CWE-191

osrg GoBGP mrt.go parseRibEntry integer underflow

Medium · published May 4, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
49.4
In the wild
Unconfirmed
What it is

A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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:X
EPSS
0.00628 · 49.4th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-05-04T05:30Z
EPSS history
Timeline
  • 04 MAY 05:30Z
    osrg GoBGP mrt.go parseRibEntry integer underflow
    cvelistv5