Code execution via unbounded CGI concatenation
Published Nov 13, 2025 · Updated Jul 5, 2026
Stack-based buffer overflow in Linksys E1200 v2 firmware 2.0.11.001 allows remote attackers to execute code or crash the router. The get_merge_mac function in httpd appends six attacker-controlled CGI values and colon delimiters to fixed-size stack buffer a2 with strcat without checking its capacity. Unauthenticated access to the router's HTTP interface is sufficient; successful exploitation executes arbitrary code or crashes the router.
Summary
What happened
Stack-based buffer overflow in Linksys E1200 v2 firmware 2.0.11.001 allows remote attackers to execute code or crash the router. The get_merge_mac function in httpd appends six attacker-controlled CGI values and colon delimiters to fixed-size stack buffer a2 with strcat without checking its capacity. Unauthenticated access to the router's HTTP interface is sufficient; successful exploitation executes arbitrary code or crashes the router.
The record
- CVE
- CVE-2025-60693
- Published
- Nov 13, 2025
- Updated
- Jul 5, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-121, T1210
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 13, 2025CVE publishedPublication date reported by the CVE source.
- Jul 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- get_merge_mac crafted HTTP POST proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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