What is CVE-2023-26613?

CVE-2023-26613 is a critical-severity vulnerability in Dlink Dir-823g, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-06-29.

How severe is CVE-2023-26613?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Dlink Dir-823g

CVE-2023-26613

An OS command injection vulnerability in D-Link DIR-823G firmware version 1.02B05 allows unauthorized attackers to execute arbitrary operating system commands via a crafted GET request to EXCU_SHELL.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-06-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.314 (98.3th percentile), scored 2026-10-31.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.314 · newest: 0.314 · change: 0.000

Affected products

Dlink Dir-823g
Dlink Dir-823g Firmware — versions 1.02b05

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.dlink.com/en/security-bulletin/ (Vendor Advisory)
github.com/726232111/VulIoT/tree/main/D-Link/DIR823G V1.0.2B05/excu_shell (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-26613?: CVE-2023-26613 is a critical-severity vulnerability in Dlink Dir-823g, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-06-29.
How severe is CVE-2023-26613?: Critical severity. CVSS v3 base score is 9.8 out of 10.