Integer overflow in Osrg Gobgp
CVE-2026-7736
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.005 · change: -0.002
Affected products
- Osrg Gobgp — versions 4.0, 4.1, 4.2
Weakness classification (CWE)
References
- github.com/osrg/gobgp/ (Product, product)
- github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592 (Patch, patch)
- github.com/osrg/gobgp/releases/tag/v4.4.0 (Product, Patch, patch)
- vuldb.com/submit/807604 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/vuln/360911 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/360911/cti (signature, Permissions Required, permissions-required, VDB Entry)
Frequently asked questions
- What is CVE-2026-7736?
- CVE-2026-7736 is a high-severity vulnerability in Osrg Gobgp, classified under CWE-189. CVSS score: 7.3/10. Published 2026-05-04.
- How severe is CVE-2026-7736?
- High severity. CVSS v3 base score is 7.3 out of 10.