CVE-2022-26259

Name: CVE-2022-26259
Creator: NVD / NIST
Published: 2022-03-28T01:15:07.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 2.38%

Last modified Jun 17, 2026

CVE-2022-26259 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A buffer over flow in Xiongmai DVR devices NBD80X16S-KL, NBD80X09S-KL, NBD80X08S-KL, NBD80X09RA-KL, AHB80X04R-MH, AHB80X04R-MH-V2, AHB80X04-R-MH-V3, AHB80N16T-GS, AHB80N32F4-LME, and NBD90S0VT-QW allows attackers to cause a Denial of Service (DoS) via a crafted RSTP request.. EPSS estimates a 2.38% chance of exploitation in the next 30 days.

Description

A buffer over flow in Xiongmai DVR devices NBD80X16S-KL, NBD80X09S-KL, NBD80X08S-KL, NBD80X09RA-KL, AHB80X04R-MH, AHB80X04R-MH-V2, AHB80X04-R-MH-V3, AHB80N16T-GS, AHB80N32F4-LME, and NBD90S0VT-QW allows attackers to cause a Denial of Service (DoS) via a crafted RSTP request.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

2.38%

81.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Xiongmaitech	Nbd80x16s-Kl Firmware	4.03.r11.nat.dss.onvifc.20210727
Xiongmaitech	Nbd80x09s-Kl Firmware	4.03.r11.nat.dss.onvifc.20210727
Xiongmaitech	Nbd80x08s-Kl Firmware	4.03.r11.nat.dss.onvifc.20210727
Xiongmaitech	Nbd80x09ra-Kl Firmware	4.03.r11.nat.dss.onvifc.20210727
Xiongmaitech	Ahb80x04r-Mh Firmware	4.03.r11.nat.dss.onvifc.20210729
Xiongmaitech	Ahb80x04r-Mh-V2 Firmware	4.03.r11.nat.dss.onvifc.20210729
Xiongmaitech	Ahb80x04-R-Mh-V3 Firmware	4.03.r11.nat.dss.onvifc.20210729
Xiongmaitech	Ahb80n16t-Gs Firmware	4.03.r11.7601.nat.onvifc.20211223
Xiongmaitech	Ahb80n32f4-Lme Firmware	4.03.r11.7601.nat.onvifc.20211228
Xiongmaitech	Nbd90s0vt-Qw Firmware	4.03.r11.713g.nat.onvifc.2021

References

https://blog.ret2.me/post/2022-01-26-exploiting-xiongmai-dvrs/Exploit, Third Party Advisory
https://www.xiongmaitech.com/en/index.php/service/notice_info/51/2Vendor Advisory
https://blog.ret2.me/post/2022-01-26-exploiting-xiongmai-dvrs/Exploit, Third Party Advisory
https://www.xiongmaitech.com/en/index.php/service/notice_info/51/2Vendor Advisory

Timeline

Published: Mar 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-26259?

How severe is CVE-2022-26259?

CVE-2022-26259 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.38% probability of exploitation in the next 30 days.

How do I fix CVE-2022-26259?

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-2022-26259?

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

Scan your code now

Source: NVD / NIST