CVE-2019-5892
bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to…
Does this matter?
Lower severity and a low EPSS score (2.72%). Track it; it rarely justifies an emergency change on its own.
Description
bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to cause a denial of service (peering session flap) via attribute 255 in a BGP UPDATE packet. This occurred during Disco in January 2019 because FRR does not implement RFC 7606, and therefore the packets with 255 were considered invalid VNC data and the BGP session was closed.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.72% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-436
- Affected
- frrouting/frrouting
- Source
- cve@mitre.org
EPSS 2.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://frrouting.org/community/security/cve-2019-5892.htmlVendor Advisory
- https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705aPatch, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-3.0.4Release Notes, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-4.0.1Release Notes, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-5.0.2Release Notes, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-6.0.2Release Notes, Third Party Advisory
- https://lists.frrouting.org/pipermail/frog/2019-January/000404.htmlPatch, Vendor Advisory
- https://frrouting.org/community/security/cve-2019-5892.htmlVendor Advisory
- https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705aPatch, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-3.0.4Release Notes, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-4.0.1Release Notes, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-5.0.2Release Notes, Third Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-6.0.2Release Notes, Third Party Advisory
- https://lists.frrouting.org/pipermail/frog/2019-January/000404.htmlPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.