How severe is CVE-2025-43970?

CVE-2025-43970 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-43970 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43970?

CVE-2025-43970 affects Osrg Gobgp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43970?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-43970 have an EU (EUVD) identifier?

Yes. CVE-2025-43970 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12350.

When was CVE-2025-43970 published?

CVE-2025-43970 was published on 2025-04-21 and last updated on 2026-06-17.

CVE-2025-43970

CVE-2025-43970 is a medium-severity vulnerability in Osrg Gobgp with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12350
Weakness: CWE-1284
Affected product: Osrg Gobgp
Published: 2025-04-21
Last modified: 2026-06-17

Description

An issue was discovered in GoBGP before 3.35.0. pkg/packet/mrt/mrt.go does not properly check the input length, e.g., by ensuring that there are 12 bytes or 36 bytes (depending on the address family).

Frequently asked questions

What is CVE-2025-43970?: An issue was discovered in GoBGP before 3.35.0. pkg/packet/mrt/mrt.go does not properly check the input length, e.g., by ensuring that there are 12 bytes or 36 bytes (depending on the address family).
How severe is CVE-2025-43970?: CVE-2025-43970 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-43970 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43970?: CVE-2025-43970 affects Osrg Gobgp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43970?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43970 have an EU (EUVD) identifier?: Yes. CVE-2025-43970 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12350.
When was CVE-2025-43970 published?: CVE-2025-43970 was published on 2025-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:*

More vulnerabilities in Osrg Gobgp

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