What is the CVSS score of CVE-2022-26414?

CVE-2022-26414 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.2%.

Vmg3312 T20A Firmware CVE-2022-26414

MEDIUM

Classic Buffer Overflow (CWE-120)

2022-04-11 security@zyxel.com.tw

Denial Of Service Buffer Overflow Zyxel Vmg3312 T20A Firmware Emg3525 T50b Firmware Emg5523 T50b Firmware Emg5723 T50K Firmware Emg6726 B10a Firmware Vmg1312 T20B Firmware Vmg3625 T50b Firmware Vmg3927 B50A Firmware Vmg3927 B50B Firmware Vmg3927 B60A Firmware Vmg3927 T50K Firmware Vmg4927 B50a Firmware Vmg8623 T50b Firmware Vmg8825 B50A Firmware Vmg8825 B50B Firmware Vmg8825 T50K Firmware Vmg8825 B60A Firmware Vmg8825 B60B Firmware Xmg3927 B50A Firmware Xmg8825 B50A Firmware Dx5401 B0 Firmware Ex3510 B0 Firmware Ex5401 B0 Firmware Ex5501 B0 Firmware Ax7501 B0 Firmware Ep240P Firmware Pm7300 T0 Firmware Pmg5317 T20B Firmware Pmg5617Ga Firmware Pmg5617 T20B2 Firmware Pmg5622Ga Firmware Px7501 B0 Firmware

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Apr 11, 2022 - 13:15 nvd

MEDIUM 5.5

DescriptionNVD

A potential buffer overflow vulnerability was identified in some internal functions of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0, which could be exploited by a local authenticated attacker to cause a denial of service.

AnalysisAI

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 potential buffer overflow vulnerability was identified in some internal functions of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0, which could be exploited by a local authenticated attacker to cause a denial of service. Affected products include: Zyxel Vmg3312-T20A Firmware, Zyxel Emg3525-T50B Firmware, Zyxel Emg5523-T50B Firmware, Zyxel Emg5723-T50K Firmware, Zyxel Emg6726-B10A Firmware. Version information: version 5.30.

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.