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NVD / CVE Program· CNA VulDB

CVE-2026-5107: FRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access control

Noroxi assessment

Priority: Monitor (action score 9/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.28% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: azl3 frr 10.5.0-1 on Azure Linux 3.0 10.5.0-2; azl3 frr 10.5.0-2 on Azure Linux 3.0 10.5.0-2; azl3 frr 10.5.0-3 on Azure Linux 3.0 10.5.0-2.

Low priority for now. Upgrade to azl3 frr 10.5.0-1 on Azure Linux 3.0 10.5.0-2; azl3 frr 10.5.0-2 on Azure Linux 3.0 10.5.0-2; azl3 frr 10.5.0-3 on Azure Linux 3.0 10.5.0-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

LowCVSS 2.3 · v4.0—No exploit Fix available
Published
Mar 30, 2026
Updated
Jun 17, 2026
EPSS
0.2% · 20th percentile

Report tools

JSON

Action score

9

Monitor

Low priority for now.

CVSS
9 / 40 · 2.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
2.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-5107

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
frroutingfrrouting

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • frrouting frrouting10.5.0
  • frrouting frrouting10.5.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • FRRouting FRR

    • 10.5.0, 10.5.1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12frrbefore 8.4.4-1.1~deb12u28.4.4-1.1~deb12u2
Debian:13frrbefore 10.3-3+deb13u110.3-3+deb13u1
Debian:14frrbefore 10.6.0-210.6.0-2
openSUSE:Tumbleweedfrrbefore 10.5.1-3.110.5.1-3.1
SUSE:Linux Enterprise Module for Server Applications 15 SP7frrbefore 8.5.7-150500.4.43.18.5.7-150500.4.43.1
SUSE:Linux Enterprise Module for Server Applications 15 SP7frrbefore 10.2.6-150700.3.10.110.2.6-150700.3.10.1
SUSE:Linux Enterprise Server 12 SP5-LTSSfrrbefore 8.5.7-8.16.18.5.7-8.16.1
SUSE:Linux Enterprise Server 16.0frrbefore 10.2.6-160000.1.110.2.6-160000.1.1

Same product

frrouting: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-38406bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."
    39Monitor
  • CVE-2023-41361An issue was discovered in FRRouting FRR 9.0.
    39Monitor
  • CVE-2022-37032An out-of-bounds read in the BGP daemon of FRRouting FRR before 8.4 may lead to a segmentation fault and denial of service.
    37Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2025-61106Oct 28, 2025 · FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at
    30Monitor
  • ← EarlierCVE-2025-61107Oct 28, 2025 · FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at
    30Monitor
  • Later →CVE-2026-28532Apr 30, 2026 · FRRouting < 10.5.3 Integer Overflow in OSPF TLV Parser Functions
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 frr 10.5.0-1 on Azure Linux 3.010.5.0-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 frr 10.5.0-2 on Azure Linux 3.010.5.0-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 frr 10.5.0-3 on Azure Linux 3.010.5.0-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 frr 8.5.5-5 on CBL Mariner 2.08.5.5-6 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 frr 8.5.5-5 on CBL-Mariner 2.08.5.5-6 · Release NotesMicrosoft (MSRC)
debian:frr8.4.4-1.1~deb12u2 · Debian:12Package registry (OSV)
opensuse:frr10.5.1-3.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:frr10.2.6-160000.1.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-266 · Incorrect Privilege Assignment

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records