Low severity · published Oct 26, 2026
CVE-2026-72755
Routinator stores TA certificate in cache without validation
New
3.8
CVSS
0.2%
EPSS
No
On KEV
Description
Routinator stores a newly-retrieved TA certificate via HTTPS in cache without validation, potentially overwriting a known good TA certificate even if validation fails.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RO
Routinator · NLnet Labs
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72755
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-72755
www.nlnetlabs.nl
https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72755.txt
More from Routinator
8.7
CVE-2026-49232
Routinator exits when accepting an incoming HTTP or RTR connection fails
8.2
CVE-2026-72753
Routinator incorrectly handles delta updates
7.5
CVE-2026-72758
Routinator may exit on malformed ranges
7.5
CVE-2026-72756
Routinator exits on malformed rsync URIs
7.5
CVE-2026-72754
Routinator exits when parsing an incorrect or very large CRL file