CVE-2026-7857

Name: CVE-2026-7857
Creator: NVD / NIST
Published: 2026-05-05T20:16:41.677+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.3/10EPSS 4.16%

Last modified Jul 24, 2026

CVE-2026-7857 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. 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. EPSS estimates a 4.16% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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

EPSS Probability

4.16%

89.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dlink	Di-8100 Firmware	16.07.26a1

References

https://github.com/draw-ctf/report/blob/main/DI-8100/user_group_asp_overflow.mdExploit, Third Party Advisory
https://vuldb.com/submit/807853Third Party Advisory, VDB Entry
https://vuldb.com/vuln/361134Third Party Advisory, VDB Entry
https://vuldb.com/vuln/361134/ctiPermissions Required, VDB Entry
https://www.dlink.com/Product

Timeline

Published: May 5, 2026
Last Modified: Jul 24, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-7857?

How severe is CVE-2026-7857?

CVE-2026-7857 has a CVSS score of 7.3/10 (HIGH severity). The EPSS model estimates a 4.16% probability of exploitation in the next 30 days.

How do I fix CVE-2026-7857?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST