CVE-2026-37459

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Source
https://cve.org/CVERecord?id=CVE-2026-37459
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37459.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-37459
Downstream
Related
Published
2026-05-04T00:00:00Z
Modified
2026-07-22T03:29:48.330310Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37459.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / github.com/frrouting/frr

Affected ranges

Type
GIT
Repo
https://github.com/frrouting/frr
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
693a2e02687cdc9d16501275e05136edea9650d9
Database specific 
{
    "source": "REFERENCES"
}

Affected versions

7.*
7.1_pulled
8.*
8.1-dev
base_10.*
base_10.0
base_10.1
base_10.2
base_10.3
base_10.4
base_10.5
base_10.6
base_7.*
base_7.2
base_7.3
base_7.4
base_7.5
base_7.6
base_8.*
base_8.0
base_8.1
base_8.2
base_8.3
base_8.4
base_8.5
base_9.*
base_9.0
base_9.1
frr-10.*
frr-10.0-dev
frr-10.2-dev
frr-10.3-dev
frr-10.4-dev
frr-10.5-dev
frr-10.6.0-dev
frr-10.7.0-dev
frr-3.*
frr-3.0-branchpoint
frr-3.1-dev
frr-5.*
frr-5.1-dev
frr-6.*
frr-6.1-dev
frr-7.*
frr-7.1-dev
frr-7.2-dev
frr-7.3-dev
frr-7.4-dev
frr-7.5-dev
frr-7.6-dev
frr-8.*
frr-8.0-dev
frr-8.1-dev
frr-8.1-rc1
frr-8.2-dev
frr-8.3-dev
frr-8.4-dev
frr-8.4-rc
frr-8.5-dev
frr-9.*
frr-9.0-dev
frr-9.1-dev
frr-9.2-dev
Other
reindent-master-after
reindent-master-before

Database specific

vanir_signatures_modified 
"2026-07-22T03:29:48Z"
vanir_signatures 
[
    {
        "signature_type": "Function",
        "target": {
            "file": "bgpd/bgp_attr.c",
            "function": "bgp_attr_nhc"
        },
        "deprecated": false,
        "source": "https://github.com/frrouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9",
        "id": "CVE-2026-37459-24ba694c",
        "signature_version": "v1",
        "digest": {
            "function_hash": "82989935978743524485069515540595131229",
            "length": 4148.0
        }
    },
    {
        "signature_type": "Line",
        "target": {
            "file": "bgpd/bgp_attr.c"
        },
        "deprecated": false,
        "source": "https://github.com/frrouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9",
        "id": "CVE-2026-37459-8bc40a04",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "12661208992429748853917076216106026589",
                "289669655143186982697976869697460209024",
                "235394718307197755736613230944375927155",
                "201357829393678812371077382055617799913"
            ],
            "threshold": 0.9
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-37459.json"