What is the CVSS score of CVE-2022-26259?

CVE-2022-26259 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.4%.

Is there a public PoC exploit available for CVE-2022-26259?

Yes, a public proof-of-concept exploit is available for CVE-2022-26259. Prioritise patching immediately. EPSS: 2.4%.

Nbd80X16S Kl Firmware CVE-2022-26259

HIGH

Classic Buffer Overflow (CWE-120)

2022-03-28 cve@mitre.org

Denial Of Service Buffer Overflow Nbd80X16S Kl Firmware Nbd80X09S Kl Firmware Nbd80X08S Kl Firmware Nbd80X09Ra Kl Firmware Ahb80X04R Mh Firmware Ahb80X04R Mh V2 Firmware Ahb80X04 R Mh V3 Firmware Ahb80N16T Gs Firmware Ahb80N32F4 Lme Firmware Nbd90S0Vt Qw Firmware

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 28, 2022 - 01:15 nvd

HIGH 7.8

DescriptionNVD

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.

AnalysisAI

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. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. 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. Affected products include: Xiongmaitech Nbd80X16S-Kl Firmware, Xiongmaitech Nbd80X09S-Kl Firmware, Xiongmaitech Nbd80X08S-Kl Firmware, Xiongmaitech Nbd80X09Ra-Kl Firmware, Xiongmaitech Ahb80X04R-Mh Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.