An issue was discovered in GoBGP before 3.35.0.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-193 and the CVSS impact.
Summary
An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| osrg | GoBGP | before 3.35.0 | 3.35.0 | Patch available | CNA |
| — | github.com/osrg/gobgp/v3 (Go) | 3.11.0 to before 3.35.0 | 3.35.0 | Patch available | GHSA-7m35-vw2c-696v |
- GoBGP Vendorosrg Affected before 3.35.0 Fixed in 3.35.0 Patch available CNA
- github.com/osrg/gobgp/v3 (Go) Vendor— Affected 3.11.0 to before 3.35.0 Fixed in 3.35.0 Patch available GHSA-7m35-vw2c-696v
Remediation
- Fix · CNA GoBGP (GoBGP) Fixed in 3.35.0
- Fix · GHSA-7m35-vw2c-696v github.com/osrg/gobgp/v3 (Go) Fixed in 3.35.0 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
GoBGP 3.35.0
4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2025-28531 An issue was discovered in GoBGP before 3.35.0.Priority MEDIUM 43
- TI-2025-28530 An issue was discovered in GoBGP before 3.35.0.Priority LOW 34
- TI-2025-28528 An issue was discovered in GoBGP before 3.35.0.Priority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2025-43971
- 2026-10-03 Alias added: GHSA-7m35-vw2c-696v
References
More osrg Gobgp vulnerabilities
- TI-2026-30596 GoBGP: Panic in AdjRib.Update via malformed BGP Update message (Nil Pointer Dereference) CVSS 3.1HIGH 7.5
- TI-2026-30162 GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE CVSS 3.1HIGH 7.5
- TI-2026-30161 GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute CVSS 3.1HIGH 7.5
- TI-2026-23526 An issue in GoBGP gobgpd v.4.2.0 allows a remote attacker to cause a denial of service via the NEXT_HOP path attribute CVSS 3.1HIGH 7.5
- TI-2025-28531 An issue was discovered in GoBGP before 3.35.0. CVSS 3.1CRITICAL 9.8
- TI-2026-28050 An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0… CVSS 3.1HIGH 7.5
Sources
- CVE-2025-43971 · CVE Program
- CVE-2025-43971 · NVD
- FIRST EPSS
- GHSA-7m35-vw2c-696v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences