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
Published Jan 10, 2019
6.5
MEDIUMCVSS 3.0
EPSS 2.72%
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.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:S/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.72% (0.02718) | 85.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.72% (0.02718) | 84.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 4.00% (0.04001) | 87.67th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.95% (0.00953) | 83.89th | v3 (v2023.03.01) |
| Jun 2, 2024 | 0.95% (0.00953) | 83.21th | v3 (v2023.03.01) |
| Jan 4, 2024 | 0.81% (0.00812) | 79.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00552) | 74.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.23% (0.01232) | 67.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.23% (0.01232) | 64.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 20.42% (0.20418) | 94.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 10.62% (0.10619) | 87.74th | v1 |
| Jan 6, 2022 | 10.62% (0.10619) | 87.59th | v1 |
| Jan 5, 2022 | 2.58% (0.02580) | 79.73th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.58% (0.02580) | 0.00th | v1 |
References (7)
- https://frrouting.org/community/security/cve-2019-5892.html x_refsource_CONFIRMVendor Advisory
- https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a x_refsource_MISCPatchThird Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-3.0.4 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-4.0.1 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-5.0.2 x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/FRRouting/frr/releases/tag/frr-6.0.2 x_refsource_MISCRelease NotesThird Party Advisory
- https://lists.frrouting.org/pipermail/frog/2019-January/000404.html x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://frrouting.org/community/security/cve-2019-5892.html | x_refsource_CONFIRMVendor Advisory | |
| https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/FRRouting/frr/releases/tag/frr-3.0.4 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/FRRouting/frr/releases/tag/frr-4.0.1 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/FRRouting/frr/releases/tag/frr-5.0.2 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://github.com/FRRouting/frr/releases/tag/frr-6.0.2 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://lists.frrouting.org/pipermail/frog/2019-January/000404.html | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.