CVE-2020-25367

Name: CVE-2020-25367
Creator: NVD / NIST
Published: 2021-11-04T10:15:07.673+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 12.56%

Last modified Jun 17, 2026

CVE-2020-25367 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A command injection vulnerability was discovered in the HNAP1 protocol in D-Link DIR-823G devices with firmware V1.0.2B05. An attacker is able to execute arbitrary web scripts via shell metacharacters in the Captcha field to Login.. EPSS estimates a 12.56% chance of exploitation in the next 30 days.

Description

A command injection vulnerability was discovered in the HNAP1 protocol in D-Link DIR-823G devices with firmware V1.0.2B05. An attacker is able to execute arbitrary web scripts via shell metacharacters in the Captcha field to Login.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

12.56%

95.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Dlink	Dir-823g Firmware	1.0.2b05

References

http://d-link.comBroken Link
https://github.com/sek1th/iot/blob/master/dir823g_3.mdExploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Not Applicable, Vendor Advisory
http://d-link.comBroken Link
https://github.com/sek1th/iot/blob/master/dir823g_3.mdExploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Not Applicable, Vendor Advisory

Timeline

Published: Nov 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25367?

How severe is CVE-2020-25367?

CVE-2020-25367 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 12.56% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25367?

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.

Are you affected by CVE-2020-25367?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST