CVE-2026-7857

A vulnerability has been found in D-Link DI-8100 16.07.26A1. This vulnerability affects the function sprintf of the file /user_group.asp of the component CGI Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS v3 7.2 HIGH
CVSS v2.0 8.3 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

8.3^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:M/C:C/I:C/A:C

Exploitability : 6.4 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication MULTIPLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/draw-ctf/report/blob/main/DI-8100/user_group_asp_overflow.md	Exploit Third Party Advisory
https://vuldb.com/submit/807853	Third Party Advisory VDB Entry
https://vuldb.com/vuln/361134	Third Party Advisory VDB Entry
https://vuldb.com/vuln/361134/cti	Permissions Required VDB Entry
https://www.dlink.com/	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:dlink:di-8100_firmware:16.07.26a1:*:*:*:*:*:*:*

cpe:2.3:h:dlink:di-8100:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-05 20:16

Updated : 2026-07-24 08:10

NVD link : CVE-2026-7857

Mitre link : CVE-2026-7857

CVE.ORG link : CVE-2026-7857

JSON object : View

Products Affected

dlink

di-8100_firmware
di-8100

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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This vulnerability affects the function sprintf of the file /user_group.asp of the component CGI Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en D-Link DI-8100 16.07.26A1. Esta vulnerabilidad afecta a la funci\u00f3n sprintf del archivo /user_group.asp del componente Gestor CGI. La manipulaci\u00f3n conduce a desbordamiento de b\u00fafer. El ataque puede iniciarse de forma remota. El exploit ha sido divulgado al p\u00fablico y puede ser utilizado."}], "lastModified": "2026-07-24T08:10:00.150", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:dlink:di-8100_firmware:16.07.26a1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4FA39417-3894-4D6D-A899-000F56AA482B"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:dlink:di-8100:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "8D417784-56F2-40AF-8FE8-C00E6F332131"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@vuldb.com"}