BaseFortify

Publication date: 2025-11-13

Last updated on: 2026-07-05

Assigner: MITRE

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 Scores

EPSS Scores

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Meta Information

Published

2025-11-13

Last Modified

2026-07-05

Generated

2026-07-06

AI Q&A

2025-11-13

EPSS Evaluated

2026-07-05

NVD

CVE-2025-60691

EUVD

EUVD-2025-175334

Affected Vendors & Products

Vendor	Product	Version / Range
linksys	e1200_firmware	2.0.11.001
linksys	e1200	2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This vulnerability is a stack-based buffer overflow in the httpd binary of Linksys E1200 v2 routers. It occurs because the apply_cgi and block_cgi functions copy user-supplied input from the "url" CGI parameter into stack buffers using sprintf without checking the input size. Since the buffers are very small, any non-empty input causes the buffer to overflow, allowing remote attackers to exploit this flaw by sending crafted HTTP requests to execute arbitrary code or cause denial of service without needing authentication.

Impact Analysis

This vulnerability can allow remote attackers to execute arbitrary code on the affected router or cause a denial of service. This means attackers could take control of the device, disrupt its normal operation, or potentially use it as a foothold to attack other devices on the network, all without requiring any authentication.

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