High severity · published Oct 29, 2025
CVE-2025-61723
Quadratic complexity when parsing some invalid inputs in encoding/pem
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
The processing time for parsing some invalid inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EN
encoding/pem · Go standard library
before 1.24.8; 1.25.0 before 1.25.2 · source: vendor
GO
GO · Golang
before 1.24.8; 1.25.0 before 1.25.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61723
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61723
Patch
https://go.dev/cl/709858
Issue Tracking
https://go.dev/issue/75676
Mailing List
https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI
Vendor Advisory
https://pkg.go.dev/vuln/GO-2025-4009
Mailing List
http://www.openwall.com/lists/oss-security/2025/10/08/1