🛡️ CVE-2022-26259 — ahb80n16t-gs-firmware

🟠 CVSS 7.8 — High ⚠️ Exploit Public CWE-120 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2022-26259 is classified as CWE-120: Classic Buffer Overflow. Input is copied into a fixed-size buffer without a length check, overwriting memory past the end of it.

Affected software

CVE-2022-26259 is recorded against 10 packages.

  • ahb80n16t-gs-firmware
  • ahb80n32f4-lme-firmware
  • ahb80x04-r-mh-v3-firmware
  • ahb80x04r-mh-firmware
  • ahb80x04r-mh-v2-firmware
  • nbd80x08s-kl-firmware
  • nbd80x09ra-kl-firmware
  • nbd80x09s-kl-firmware
  • nbd80x16s-kl-firmware
  • nbd90s0vt-qw-firmware

Timeline and source

Published on 28 March 2022 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

blog.ret2.me
www.xiongmaitech.com
blog.ret2.me
www.xiongmaitech.com

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-120
Public Exploit ⚠️ Yes
Source NVD
Published 2022-03-28
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
ahb80n16t-gs-firmware
ahb80n32f4-lme-firmware
ahb80x04-r-mh-v3-firmware
ahb80x04r-mh-firmware
ahb80x04r-mh-v2-firmware
nbd80x08s-kl-firmware
nbd80x09ra-kl-firmware
nbd80x09s-kl-firmware
nbd80x16s-kl-firmware
nbd90s0vt-qw-firmware

Exploit Protection

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CVE-2022-26259 carries CVSS 7.8 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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