Vulnerability · Published Apr 9, 2026 · Assigned by VulDB

CVE-2026-5983D-Link DIR-605L POST Request formSetDDNS 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 53% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 46.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in D-Link DIR-605L 2.13B01. This issue affects the function formSetDDNS of the file /goform/formSetDDNS of the component POST Request Handler. Executing a manipulation of the argument curTime can lead to buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. 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-356537 | D-Link DIR-605L POST Request formSetDDNS buffer overflow vdb-entry, technical-description
VDB-356537 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #791856 | 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-formSetDDNS-33153a41781f802f9997f48dc9cf6304?source=copy_link exploit
https://www.dlink.com/ product