🛡️ CVE-2022-26259 — ahb80n16t-gs-firmware
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
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 | — | — |
References
More CVE 2022 advisories
Browse all of CVE 2022 in the advisory index.
Exploit Protection
Are you running ahb80n16t-gs-firmware?
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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