CVE-2023-36355

9.9 CRITICAL 32% exploit odds No fix listed Memory safety Network gear

What it is

TP-Link TL-WR940N V4 was discovered to contain a buffer overflow via the ipStart parameter at /userRpm/WanDynamicIpV6CfgRpm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted GET request.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
Exploit odds: 31.7% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2023-06-21 00:00 UTC ReservedThe CVE id was reserved by its CNA
2023-06-22 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 06:06 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 31.7% in the next 30 days (EPSS).
Severity: 9.9 CRITICAL (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2023-06-22 20:15 UTC
Last modified: 2026-06-17 06:06 UTC
Exploit probability: 31.7% · EPSS, next 30 days
Weakness: CWE-120 · Classic buffer overflow
Record status: Modified

Affected

TP-Link tl-wr940n Firmware

Attack profile CVSS 3.1 · 9.9

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Changed
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Is it in your code?

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References

NVD record · CVE.org record