How severe is CVE-2025-60691?

CVE-2025-60691 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-60691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-60691?

CVE-2025-60691 affects Linksys E1200 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-60691?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-60691 have an EU (EUVD) identifier?

Yes. CVE-2025-60691 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175334.

When was CVE-2025-60691 published?

CVE-2025-60691 was published on 2025-11-13 and last updated on 2026-07-05.

CVE-2025-60691

CVE-2025-60691 is a high-severity vulnerability in Linksys E1200 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-175334
Weakness: CWE-121
Affected product: Linksys E1200 Firmware
Published: 2025-11-13
Last modified: 2026-07-05

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.

Frequently asked questions

What is 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). 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.
How severe is CVE-2025-60691?: CVE-2025-60691 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-60691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-60691?: CVE-2025-60691 affects Linksys E1200 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-60691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-60691 have an EU (EUVD) identifier?: Yes. CVE-2025-60691 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-175334.
When was CVE-2025-60691 published?: CVE-2025-60691 was published on 2025-11-13 and last updated on 2026-07-05.

References

EU advisories (EUVD)

http://linksys.com

Affected products (1)

cpe:2.3:o:linksys:e1200_firmware:2.0.11.001:*:*:*:*:*:*:*

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