What’s Vulnerable › Vulnerabilities

CVE-2026-5212: D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-31 · updated 2026-07-24
• Weakness: CWE-119

Description

A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. This issue affects the function Webdav_Upload_File of the file /cgi-bin/webdav_mgr.cgi. The manipulation of the argument f_file leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Dlink Dnr-202L Firmware: through 2026-02-05
• Dlink Dnr-326 Firmware: through 2026-02-05
• Dlink Dns-1100-4 Firmware: through 2026-02-05
• Dlink Dns-1200-05 Firmware: through 2026-02-05
• Dlink Dns-120 Firmware: through 2026-02-05
• Dlink Dns-1550-04 Firmware: through 2026-02-05
• Dlink Dns-315L Firmware: through 2026-02-05
• D-Link DNS-320: through 2026-02-05
• Dlink Dns-320L Firmware: through 2026-02-05
• Dlink Dns-320Lw Firmware: through 2026-02-05
• Dlink Dns-321 Firmware: through 2026-02-05
• Dlink Dns-322L Firmware: through 2026-02-05
• Dlink Dns-323 Firmware: through 2026-02-05
• Dlink Dns-325 Firmware: through 2026-02-05
• Dlink Dns-326 Firmware: through 2026-02-05
• Dlink Dns-327L Firmware: through 2026-02-05
• Dlink Dns-340L Firmware: through 2026-02-05
• D-Link DNS-343 ShareCenter: through 2026-02-05
• Dlink Dns-345 Firmware: through 2026-02-05
• Dlink Dns-726-4 Firmware: through 2026-02-05

References

• https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md
• https://vuldb.com/submit/780435
• https://vuldb.com/submit/780436
• https://vuldb.com/vuln/354348
• https://vuldb.com/vuln/354348/cti
• https://www.dlink.com/

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