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CVE-2026-5979: Buffer Overflow in D-Link DIR-605L

0
High
VulnerabilityCVE-2026-5979cvecve-2026-5979
Published: Thu Apr 09 2026 (04/09/2026, 20:45:15 UTC)
Source: CVE Database V5
Vendor/Project: D-Link
Product: DIR-605L

Description

CVE-2026-5979 is a high-severity buffer overflow vulnerability in the D-Link DIR-605L router firmware version 2. 13B01. The flaw exists in the formVirtualServ function of the POST Request Handler component, where manipulation of the curTime argument can cause a buffer overflow. This vulnerability can be exploited remotely without user interaction. The affected product is no longer supported by the vendor, and no official patch or remediation is available. Although an exploit is public, there are no confirmed reports of exploitation in the wild.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/09/2026, 21:20:56 UTC

Technical Analysis

This vulnerability involves a buffer overflow in the formVirtualServ function of the D-Link DIR-605L router firmware 2.13B01. Specifically, the POST Request Handler improperly processes the curTime argument, allowing remote attackers to trigger a buffer overflow condition. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The product affected is no longer supported, and no official remediation or patch has been published by the vendor.

Potential Impact

Successful exploitation of this vulnerability could allow remote attackers to cause a buffer overflow, potentially leading to denial of service or arbitrary code execution on the affected device. Given the high CVSS score and the remote attack vector, the impact on affected devices is significant. However, since the product is no longer supported and no patch is available, affected devices remain vulnerable if exposed to untrusted networks.

Mitigation Recommendations

No official patch or remediation is available because the affected product is no longer supported by the vendor. Users should consider discontinuing use of the vulnerable firmware version and replacing affected devices with supported models. Network-level mitigations such as restricting access to the device's management interface from untrusted networks may reduce exposure. Monitor vendor advisories for any updates, but currently, patch status is not confirmed and no official fix exists.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-04-09T12:18:05.451Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 69d814ae1cc7ad14da21653e

Added to database: 4/9/2026, 9:05:50 PM

Last enriched: 4/9/2026, 9:20:56 PM

Last updated: 4/9/2026, 10:11:05 PM

Views: 3

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