CVE-2026-5212 (GCVE-0-2026-5212)
Vulnerability from cvelistv5 – Published: 2026-03-31 20:15 – Updated: 2026-04-03 16:40
VLAI
EPSS
VEX
Title
D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-03 16:39 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/354348 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/354348/cti | signaturepermissions-required |
| https://vuldb.com/submit/780435 | third-party-advisory |
| https://vuldb.com/submit/780436 | third-party-advisory |
| https://github.com/wudipjq/my_vuln/blob/main/D-Li… | exploit |
| https://www.dlink.com/ | product |
Impacted products
20 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| D-Link | DNS-120 |
Affected:
20260205
|
guessed | |
| D-Link | DNR-202L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-315L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-320 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-320L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-320LW |
Affected:
20260205
|
guessed | |
| D-Link | DNS-321 |
Affected:
20260205
|
guessed | |
| D-Link | DNR-322L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-323 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-325 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-326 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-327L |
Affected:
20260205
|
guessed | |
| D-Link | DNR-326 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-340L |
Affected:
20260205
|
guessed | |
| D-Link | DNS-343 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-345 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-726-4 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-1100-4 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-1200-05 |
Affected:
20260205
|
guessed | |
| D-Link | DNS-1550-04 |
Affected:
20260205
|
guessed |
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"providerMetadata": {
"dateUpdated": "2026-03-31T20:15:13.429Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-354348 | D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/354348"
},
{
"name": "VDB-354348 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/354348/cti"
},
{
"name": "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",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/780435"
},
{
"name": "Submit #780436 | 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 (Duplicate)",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/780436"
},
{
"tags": [
"exploit"
],
"url": "https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md"
},
{
"tags": [
"product"
],
"url": "https://www.dlink.com/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-31T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-03-31T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-03-31T12:34:50.000Z",
"value": "VulDB entry last update"
}
],
"title": "D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-5212",
"datePublished": "2026-03-31T20:15:13.429Z",
"dateReserved": "2026-03-31T10:29:30.918Z",
"dateUpdated": "2026-04-03T16:40:05.322Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.