CVE-2026-5212
Detail
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
Vector: 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
CVSS 3.x Severity and Vector Strings:
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)
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Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-787
Out-of-bounds Write
NIST
CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
VulDB
CWE-121
Stack-based Buffer Overflow
VulDB
Change History
4 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 6:58:37 AM
Action
Type
Old Value
New Value
Added
SSVC
{"timestamp":"2026-04-03T16:39:46.497354Z","id":"CVE-2026-5212","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
CVE Modified by VulDB
6/17/2026 6:58:37 AM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"D-Link","product":"DNS-120","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-202L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-315L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-320LW","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-321","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-322L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-323","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-325","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-326","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-327L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNR-326","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-340L","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-343","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-345","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-726-4","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1100-4","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1200-05","versions":[{"version":"20260205","status":"affected"}]},{"vendor":"D-Link","product":"DNS-1550-04","versions":[{"version":"20260205","status":"affected"}]}]
Initial Analysis by NIST
4/02/2026 1:15:02 PM
Action
Type
Old Value
New Value
Added
CWE
CWE-787
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dnr-202l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dnr-202l:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dnr-326_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dnr-326:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-1100-4_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-1100-4:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-1200-05_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-1200-05:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-120_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-120:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-1550-04_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-1550-04:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-315l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-315l:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-320_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-320:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-320l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-320l:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-320lw_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-320lw:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-321_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-321:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-322l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-322l:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-323_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-323:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-325_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-325:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-326_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-326:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-327l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-327l:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-340l_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-340l:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-343_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-343:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-345_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-345:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:o:dlink:dns-726-4_firmware:*:*:*:*:*:*:*:* versions up to (including) 2026-02-05
OR
cpe:2.3:h:dlink:dns-726-4:-:*:*:*:*:*:*:*
Added
Reference Type
VulDB: https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md Types: Exploit, Third Party Advisory
Added
Reference Type
VulDB: https://vuldb.com/submit/780435 Types: Third Party Advisory, VDB Entry
Added
Reference Type
VulDB: https://vuldb.com/submit/780436 Types: Third Party Advisory, VDB Entry
Added
Reference Type
VulDB: https://vuldb.com/vuln/354348 Types: Third Party Advisory, VDB Entry
Added
Reference Type
VulDB: https://vuldb.com/vuln/354348/cti Types: Permissions Required, VDB Entry
Added
Reference Type
VulDB: https://www.dlink.com/ Types: Product
New CVE Received from VulDB
3/31/2026 5:16:33 PM
Action
Type
Old Value
New Value
Added
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.
Added
CVSS V4.0
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
Added
CVSS V3.1
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V2
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Added
CWE
CWE-119
Added
CWE
CWE-121
Added
Reference
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md
Added
Reference
https://vuldb.com/submit/780435
Added
Reference
https://vuldb.com/submit/780436
Added
Reference
https://vuldb.com/vuln/354348
Added
Reference
https://vuldb.com/vuln/354348/cti
Added
Reference
https://www.dlink.com/
Quick Info
CVE Dictionary Entry: CVE-2026-5212 NVD
Published Date: 03/31/2026 NVD
Last Modified: 06/17/2026
Source: VulDB
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