How severe is CVE-2025-25901?

CVE-2025-25901 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-25901 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25901?

CVE-2025-25901 affects Tp-link Tl-wr841nd Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25901?

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-2025-25901 have an EU (EUVD) identifier?

Yes. CVE-2025-25901 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4140.

When was CVE-2025-25901 published?

CVE-2025-25901 was published on 2025-02-13 and last updated on 2026-06-17.

CVE-2025-25901

CVE-2025-25901 is a high-severity vulnerability in Tp-link Tl-wr841nd Firmware with a CVSS 3.x base score of 7.5. 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4140
Weakness: CWE-787
Affected product: Tp-link Tl-wr841nd Firmware
Published: 2025-02-13
Last modified: 2026-06-17

Description

A buffer overflow vulnerability was discovered in TP-Link TL-WR841ND V11, triggered by the dnsserver1 and dnsserver2 parameters at /userRpm/WanSlaacCfgRpm.htm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.

Frequently asked questions

What is CVE-2025-25901?: A buffer overflow vulnerability was discovered in TP-Link TL-WR841ND V11, triggered by the dnsserver1 and dnsserver2 parameters at /userRpm/WanSlaacCfgRpm.htm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted packet.
How severe is CVE-2025-25901?: CVE-2025-25901 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-25901 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25901?: CVE-2025-25901 affects Tp-link Tl-wr841nd Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25901?: 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-2025-25901 have an EU (EUVD) identifier?: Yes. CVE-2025-25901 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4140.
When was CVE-2025-25901 published?: CVE-2025-25901 was published on 2025-02-13 and last updated on 2026-06-17.

References

https://github.com/2664521593/mycve/blob/main/TP-Link/BOF_in_TP-Link_TL-WR841ND-V11_5.pdf

Affected products (1)

cpe:2.3:o:tp-link:tl-wr841nd_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Tp-link Tl-wr841nd Firmware

CVE-2025-25898 — High (CVSS 7.5): A buffer overflow vulnerability was discovered in TP-Link TL-WR841ND V11 via the pskSecret parameter at…
CVE-2025-25897 — High (CVSS 7.5): A buffer overflow vulnerability was discovered in TP-Link TL-WR841ND V11 via the 'ip' parameter at…
CVE-2015-3035 — High (CVSS 7.5): Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317, C7 (2.0) with firmware before…
CVE-2025-9377 — High (CVSS 7.2): The authenticated remote command execution (RCE) vulnerability exists in the Parental Control page on TP-Link Archer…
CVE-2024-9284 — Medium (CVSS 6.5): A vulnerability was found in TP-LINK TL-WR841ND up to 20240920. It has been rated as critical. Affected by this issue…

All CVEs affecting Tp-link Tl-wr841nd Firmware →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →