CVE-2026-5213 is a high-severity stack-based buffer overflow vulnerability (CVSS 8.8) affecting numerous D-Link DNS and DNR series devices, including models like DNS-120, DNS-320, and DNS-327L. The flaw exists in the cgi_adduser_to_session function within /cgi-bin/account_mgr.cgi, triggered by manipulating the 'read_list' argument. This vulnerability can be exploited remotely with low privileges and no user interaction, leading to high impact on confidentiality, integrity, and availability. Although not currently on the KEV catalog, the exploit has been publicly disclosed and may be utilized, garnering some community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2026-02-05CPE matchmatch criteria | cpe:2.3:o:dlink:dnr-202l_firmware:*:*:*:*:*:*:*:* | ||
<= 2026-02-05CPE matchmatch criteria | cpe:2.3:o:dlink:dnr-326_firmware:*:*:*:*:*:*:*:* | ||
<= 2026-02-05CPE matchmatch criteria | cpe:2.3:o:dlink:dns-1100-4_firmware:*:*:*:*:*:*:*:* | ||
<= 2026-02-05CPE matchmatch criteria | cpe:2.3:o:dlink:dns-120_firmware:*:*:*:*:*:*:*:* | ||
<= 2026-02-05CPE matchmatch criteria | cpe:2.3:o:dlink:dns-1200-05_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.