How severe is CVE-2026-5107?

CVE-2026-5107 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-5107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5107?

CVE-2026-5107 primarily affects Frrouting. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-5107?

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

Does CVE-2026-5107 have an EU (EUVD) identifier?

Yes. CVE-2026-5107 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17060.

When was CVE-2026-5107 published?

CVE-2026-5107 was published on 2026-03-30 and last updated on 2026-06-17.

CVE-2026-5107

CVE-2026-5107 is a medium-severity vulnerability in Frrouting with a CVSS 3.x base score of 4.2. 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-266.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
CVSS v2: 3.6
CVSS v4: 2.3
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17060
Weakness: CWE-266
Affected product: Frrouting
Published: 2026-03-30
Last modified: 2026-06-17

Description

A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch.

Frequently asked questions

What is CVE-2026-5107?: A vulnerability has been found in FRRouting FRR up to 10.5.1. This affects the function process_type2_route of the file bgpd/bgp_evpn.c of the component EVPN Type-2 Route Handler. The manipulation leads to improper access controls. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is reported as difficult. The identifier of the patch is 7676cad65114aa23adde583d91d9d29e2debd045. To fix this issue, it is recommended to deploy a patch.
How severe is CVE-2026-5107?: CVE-2026-5107 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-5107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5107?: CVE-2026-5107 primarily affects Frrouting. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-5107?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5107 have an EU (EUVD) identifier?: Yes. CVE-2026-5107 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17060.
When was CVE-2026-5107 published?: CVE-2026-5107 was published on 2026-03-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:frrouting:frrouting:10.5.0:*:*:*:*:*:*:*
cpe:2.3:a:frrouting:frrouting:10.5.1:*:*:*:*:*:*:*

More vulnerabilities in Frrouting

CVE-2023-38406 — Critical (CVSS 9.8): bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."
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CVE-2023-41360 — Critical (CVSS 9.1): An issue was discovered in FRRouting FRR through 9.0. bgpd/bgp_packet.c can read the initial byte of the ORF header in…
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CVE-2022-37035 — High (CVSS 8.1): An issue was discovered in bgpd in FRRouting (FRR) 8.3. In bgp_notify_send_with_data() and bgp_process_packet() in…

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