CVE-2024-55553: frr regression
Affects frrSource GCVE Database
Not known to be exploited · fixed in 7.2.1-1ubuntu0.2+esm5 : patch frr soon.
Data as of 6 Nov 2026, 02:05 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- Patch
- Available – fixed in 7.2.1-1ubuntu0.2+esm5, 8.1-1ubuntu1.17, 8.4.4-1.1ubuntu6.8
Exploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade the Ubuntu frr to 7.2.1-1ubuntu0.2+esm5 (package) or 8.1-1ubuntu1.17 (package) or 8.4.4-1.1ubuntu6.8 (package).
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSfrrpkg:deb/ubuntu/frr?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSfrrpkg:deb/ubuntu/frr?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu Pro 20.04 LTSfrrpkg:deb/ubuntu/frr?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available and users should update to the following package versions: 7.2.1-1ubuntu0.2+esm5 for Ubuntu 20.04 LTS, 8.1-1ubuntu1.17 for Ubuntu 22.04 LTS, and 8.4.4-1.1ubuntu6.8 for Ubuntu 24.04 LTS. Standard system updates will apply the necessary changes. Ubuntu Pro users can obtain fixes via ESM Apps. No additional mitigation actions are required beyond applying these updates.
Description
A regression introduced in FRR after fixing CVE-2024-55553 caused the software to stop processing RPKI updates after the first one, preventing route revalidation when RPKI data changed. Additionally, on Ubuntu 20.04 LTS, the BGP daemon failed to start when the RPKI module was enabled. This issue was fixed in updated FRR package versions.