CVE-2025-14133Public exploitNetwork attack vector

Authenticated code execution via unchecked client-name copy

Published Dec 6, 2025 · Updated Dec 8, 2025

Stack overflow in six Linksys RE extenders allows remote authenticated users to execute code via a crafted clientsname_0 value. AP_get_wireless_clientlist_setClientsName in mod_form.so copies the unchecked value into a stack-local buffer, overwriting its return address. A valid session cookie is required; an oversized management POST demonstrably crashes the device and enables return-address control.

CVSS severity8.8
High
EPSS probability0.87%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in six Linksys RE extenders allows remote authenticated users to execute code via a crafted clientsname_0 value. AP_get_wireless_clientlist_setClientsName in mod_form.so copies the unchecked value into a stack-local buffer, overwriting its return address. A valid session cookie is required; an oversized management POST demonstrably crashes the device and enables return-address control.

The record

CVE
CVE-2025-14133
Published
Dec 6, 2025
Updated
Dec 8, 2025
Vendor
Linksys
Product
RE6250
Classifications
CWE-121, CWE-119, CWE-787, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.013.001
  2. Affected versionversion=1.0.04.001
  3. Affected versionversion=1.0.04.002
  4. Affected versionversion=1.1.05.003
  5. Affected versionversion=1.2.07.001

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linksys · RE6250version=1.0.013.001; version=1.0.04.001; version=1.0.04.002; version=1.1.05.003; version=1.2.07.001
Linksys · RE7000version=1.0.013.001; version=1.0.04.001; version=1.0.04.002; version=1.1.05.003; version=1.2.07.001
Linksys · RE9000version=1.0.013.001; version=1.0.04.001; version=1.0.04.002; version=1.1.05.003; version=1.2.07.001
Linksys · RE6300version=1.0.013.001; version=1.0.04.001; version=1.0.04.002; version=1.1.05.003; version=1.2.07.001
Linksys · RE6350version=1.0.013.001; version=1.0.04.001; version=1.0.04.002; version=1.1.05.003; version=1.2.07.001
Linksys · RE6500version=1.0.013.001; version=1.0.04.001; version=1.0.04.002; version=1.1.05.003; version=1.2.07.001

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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