Buffer overflow in Osrg Gobgp
CVE-2026-7737
A vulnerability was identified in osrg GoBGP up to 4.3.0. Affected by this issue is the function BMPPeerUpNotification.ParseBody/BMPStatisticsReport.ParseBody of the file pkg/packet/bmp/bmp.go of the component BMP Parser. The manipulation leads to out-of-bounds read. The attack can be initiated remotely. Upgrading to version 4.4.0 can resolve this issue. The identifier of the patch is bc77597d42335c78464bc8e15a471d887bbdf260. Upgrading the affected component is recommended.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (49.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.006 · change: -0.003
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/bc77597d42335c78464bc8e15a471d887bbdf260 (Patch, patch)
- github.com/osrg/gobgp/releases/tag/v4.4.0 (Product, Patch, patch)
- vuldb.com/submit/807605 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/vuln/360912 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/360912/cti (signature, Permissions Required, permissions-required, VDB Entry)
Frequently asked questions
- What is CVE-2026-7737?
- CVE-2026-7737 is a medium-severity vulnerability in Osrg Gobgp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-05-04.
- How severe is CVE-2026-7737?
- Medium severity. CVSS v3 base score is 5.3 out of 10.