CVE-2025-43971 json
GoBGP panics due to a zero value for softwareVersionLen
published last yr. modified last mo. also EUVD-2025-12349 , GHSA-7m35-vw2c-696v , GO-2025-3631
- cvss
- 8.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
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.
Patch / fix
- go github.com/osrg/gobgp/v3 3.35.0
- GoBGP GoBGP 3.35.0
- gobgp Debian 14, Debian 13 3.35.0-1
debian advisories DEBIAN-CVE-2025-43971
- gobgp Ubuntu Pro 24.04 LTS 3.23.0-1ubuntu0.3+esm2
ubuntu advisories UBUNTU-CVE-2025-43971
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250422T181640-1.1
opensuse advisories openSUSE-SU-2025:15017-1
Is CVE-2025-43971 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| GitHub | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/osrg/gobgp/v3 | >=3.11.0, <3.35.0 <3.35.0 |
3.35.0 |
| go | github.com/osrg/gobgp | all versions |
no fix listed |
Affected products
- GoBGP GoBGP
Classification
- Weakness
-
- CWE-193 Off-by-one Error
References
-
github.com
/osrg/gobgp/commit/08a001e06d90e8bcc190084c66992f46f62c0986
web, patch
-
github.com
/osrg/gobgp/compare/v3.34.0...v3.35.0
web, patch, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2025-43971
advisory
-
github.com
/osrg/gobgp
package
-
security-tracker.debian.org
/tracker/CVE-2025-43971
web
-
github.com
/advisories/GHSA-7m35-vw2c-696v
advisory
Sources
- CVE List CVE-2025-43971
- GitHub Advisory GHSA-7m35-vw2c-696v
- NVD CVE-2025-43971
- OSV GO-2025-3631
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.