Vulnerability · Published Apr 9, 2026 · Assigned by VulDB

CVE-2026-5981D-Link DIR-605L POST Request formAdvFirewall buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in DIR-605L from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 45.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability has been found in D-Link DIR-605L 2.13B01. This affects the function formAdvFirewall of the file /goform/formAdvFirewall of the component POST Request Handler. Such manipulation of the argument curTime leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Affected products (as reported)

Vendor	Product	Versions
D-Link	DIR-605L	2.13B01

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-356535 | D-Link DIR-605L POST Request formAdvFirewall buffer overflow vdb-entry, technical-description
VDB-356535 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #791854 | D-Link DIR-605L D-Link DIR-605L 2.13B01 BETA Buffer Overflow third-party-advisory
https://lavender-bicycle-a5a.notion.site/D-Link-DIR-605L-formAdvFirewall-33153a41781f80678733f4b12282f3fa?source=copy_link exploit
https://www.dlink.com/ broken-link, product