CVE-2026-5212 | D-Link DNS-1550-04 up to 20260205 /cgi-bin/webdav_mgr.cgi Webdav_Upload_File f_file stack-based overflow

VDB-354348 · CVE-2026-5212 · GCVE-100-354348 D-LINK DNS-1550-04 UP TO 20260205 /CGI-BIN/WEBDAV_MGR.CGI WEBDAV_UPLOAD_FILE F_FILE STACK-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI Summaryinfo A vulnerability categorized as critical has been discovered 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. Impacted is the function Webdav_Upload_File of the file /cgi-bin/webdav_mgr.cgi. The manipulation of the argument f_file results in stack-based overflow. This vulnerability was named CVE-2026-5212. The attack may be performed from remote. In addition, an exploit is available. Detailsinfo A vulnerability classified as critical 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. Affected is the function Webdav_Upload_File of the file /cgi-bin/webdav_mgr.cgi. The manipulation of the argument f_file with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-5212. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details and a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/31/2026). The exploit is shared for download at github.com. It is declared as proof-of-concept. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor D-Link Name DNR-202L DNR-322L DNR-326 DNS-120 DNS-315L DNS-320 DNS-320L DNS-320LW DNS-321 DNS-323 DNS-325 DNS-326 DNS-327L DNS-340L DNS-343 DNS-345 DNS-726-4 DNS-1100-4 DNS-1200-05 DNS-1550-04 Version 20260205 License commercial Website Vendor: https://www.dlink.com/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.8 VulDB Meta Temp Score: 8.0 VulDB Base Score: 8.8 VulDB Temp Score: 8.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Stack-based overflow CWE: CWE-121 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/31/2026 Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Vendor: dlink.com Advisory: github.com Status: Not defined CVE: CVE-2026-5212 (🔒) GCVE (CVE): GCVE-0-2026-5212 GCVE (VulDB): GCVE-100-354348 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/31/2026 12:34 Changes: 03/31/2026 12:34 (56) Complete: 🔍 Submitter: Ziyue Xie Cache ID: 99:364:101 Submitinfo Accepted Submit #780435: D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Stack-based Buffer Overflow (by Ziyue Xie) Duplicate Submit #XXXXXX: X-xxxx Xxx-xxx/xxxx/xxxx/xxx/xxxx/xxxxx/xxx/xxxx/xxx/xxx/xxx/xxxx/xxx/xxxx/xxx/xxx/xxx-x/xxxx-x/xxxx-xx/xxxx-xx Xx Xx Xxxxxxxx Xxxxx-xxxxx Xxxxxx Xxxxxxxx (by Ziyue Xie) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸