CVE-2025-6151 Details
Description
A vulnerability has been found in TP-Link TL-WR940N V4 and TL-WR841N V11. Affected by this issue is some unknown functionality of the file /userRpm/WanSlaacCfgRpm.htm, which may lead to buffer overflow. The attack may be launched remotely. This vulnerability only affects products that are no longer supported by the maintainer.
A critical buffer overflow vulnerability has been identified in the TP-Link TL-WR940N V4 router. The issue arises in the file '/userRpm/WanSlaacCfgRpm.htm', where the 'dnsserver1' parameter can be manipulated, leading to a buffer overflow. This vulnerability can be exploited remotely, causing a denial-of-service condition by crashing the router and making it inaccessible.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 17, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/WhereisDoujo/CVE/issues/7 | CISA-ADP | ExploitIssue TrackingThird Party Advisory |
| https://github.com/WhereisDoujo/CVE/issues/7 | TPLink | ExploitIssue TrackingThird Party Advisory |
| https://vuldb.com/?ctiid.312626 | TPLink | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.312626 | TPLink | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.593031 | TPLink | Third Party AdvisoryVDB Entry |
| https://www.tp-link.com/us/support/faq/4536/ | TPLink |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | TPLink |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | TPLink |
Affected Products
| Product | Versions |
|---|---|
| tp-link tl-wr940n firmware | All versions |
CPE
Remediation
| |
| tp-link tl-wr940n | v4 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | TPLink |
| Jul 15, 2025 | CVE Modified | TPLink |
| Jul 3, 2025 | CVE Modified | [email protected] |
| Jun 19, 2025 | Initial Analysis | [email protected] |
| Jun 17, 2025 | CVE Modified | CISA-ADP |
| Jun 17, 2025 | New CVE Received | [email protected] |