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Vulnerabilities

Vulnerability · CVE-2014-125122

A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router.

Published Jul 31, 2025 · catalog updated Apr 7, 2026 · Linksys WRT120N

Check if you run it

No confirmed exploitation is on record for CVE-2014-125122. EPSS is 1.16%. Act only if a listed version of Linksys WRT120N is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.16%
Remediation
Vendor / distro source
Affected products
vendor Linksys WRT120N 1.0.07

A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset the administrator password of the device to a blank value. This grants unauthorized access to the router’s web management interface without requiring valid credentials.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linksys WRT120N 1.0.071.0.07

How to fix CVE-2014-125122

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2014-125122. EPSS is 1.16%. Act only if a listed version of Linksys WRT120N is installed.

Which versions are affected?

Compare what you have installed with Linksys WRT120N 1.0.07 1.0.07. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.16%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 31, 2025 · EUVD

    Detected

    A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset

  2. Apr 7, 2026 · EUVD

    Updated

    A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this flaw, an unauthenticated remote attacker can overwrite memory in a controlled manner, enabling them to temporarily reset

Sources

  • CVE.orgVulnerability recordCVE-2014-125122

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2014-125122

    30-day exploitation probability 1.16%

    first.org
  • EUVDVulnerability recordEUVD-2014-9815

    A stack-based buffer overflow vulnerability exists in the tmUnblock.cgi endpoint of the Linksys WRT120N wireless router. The vulnerability is triggered by sending a specially crafted HTTP POST request with an overly long TM_Block_URL parameter to the endpoint. By exploiting this

    euvd.enisa.europa.eu
  • Metasploit ModulesPublic exploit moduleauxiliary_admin/http/linksys_tmunblock_admin_reset_bof

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

CVE-2014-125122: A stack-based buffer overflow vulnerability exists… · ZeroDay Findings