Disclosed
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.
Exploitation Probability (EPSS)
Low Priority0.08%
The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.
0% (Theoretical)100% (Certainty)
7-Day Exploitation Trend
Vulnerability Timeline
2 eventsMay 5, 2026
Vulnerability Disclosed
Published to component-level vulnerability database.
May 6, 2026
Last Updated
Record updated with new analysis or tags.
Threat Actor Attribution
PREMIUM INTELAssociated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes
Remediation & Mitigation
SOLUTIONOfficial patches and mitigation steps are available for this vulnerability.
# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
Affected Products
2 Total
dlink/di-8100_firmware16.07.26a1
dlink/di-8100-
References
https://github.com/draw-ctf/report/blob/main/DI-8100/user_group_asp_overflow.mdGitHub
ExploitThird Party Advisory
https://vuldb.com/submit/807853Vuldb
Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/361134Vuldb
Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/361134/ctiVuldb
Permissions RequiredVDB Entry
Am I Vulnerable?
Check your domain or package.json for CVE-2026-7857 exposure.
Vulnerability Details
CVSS Base Score
7.2/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published Date
May 5, 2026
Last Modified
May 6, 2026
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