High severity · published Nov 13, 2025
CVE-2025-60691
A stack-based buffer overflow exists in the httpd binary of Linksys E1200 v2 routers (Firmware E1200_v2.0.11.001_us.tar.gz)
8.8
CVSS
0.8%
EPSS
No
On KEV
Description
A stack-based buffer overflow exists in the httpd binary of Linksys E1200 v2 routers (Firmware E1200_v2.0.11.001_us.tar.gz). The apply_cgi and block_cgi functions copy user-supplied input from the "url" CGI parameter into stack buffers (v36, v29) using sprintf without bounds checking. Because these buffers are allocated as single-byte variables, any non-empty input will trigger a buffer overflow. Remote attackers can exploit this vulnerability via crafted HTTP requests to execute arbitrary code or cause denial of service without authentication.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
E1200 Firmware · Linksys
2.0.11.001 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-60691
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-60691
Exploit
https://github.com/yifan20020708/SGTaint-0-day/blob/main/Linksys/Linksys-E1200/CVE-2025-60691.md
Product
https://www.linksys.com/
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