How severe is CVE-2026-37461?

CVE-2026-37461 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-37461 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-37461?

CVE-2026-37461 affects Osrg Gobgp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-37461?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-37461 have an EU (EUVD) identifier?

Yes. CVE-2026-37461 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26999.

When was CVE-2026-37461 published?

CVE-2026-37461 was published on 2026-05-04 and last updated on 2026-06-17.

CVE-2026-37461

CVE-2026-37461 is a high-severity vulnerability in Osrg Gobgp with a CVSS 3.x base score of 7.5. 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26999
Weakness: CWE-125
Affected product: Osrg Gobgp
Published: 2026-05-04
Last modified: 2026-06-17

Description

An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

Frequently asked questions

What is CVE-2026-37461?: An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
How severe is CVE-2026-37461?: CVE-2026-37461 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-37461 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-37461?: CVE-2026-37461 affects Osrg Gobgp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-37461?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-37461 have an EU (EUVD) identifier?: Yes. CVE-2026-37461 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26999.
When was CVE-2026-37461 published?: CVE-2026-37461 was published on 2026-05-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:osrg:gobgp:4.3.0:*:*:*:*:*:*:*

More vulnerabilities in Osrg Gobgp

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CVE-2026-30405 — High (CVSS 7.5): 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
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