Cyber Resilience

CVE-2023-6397

Medium

Published: 20 February 2024

Published
20 February 2024
Modified
21 January 2025
KEV Added
—
Patch
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CVSS Score v3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0013 31.9th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-6397 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Zyxel Atp100 Firmware. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 31.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could allow a LAN-based attacker to cause denial-of-service (DoS) conditions by…

more

downloading a crafted RAR compressed file onto a LAN-side host if the firewall has the “Anti-Malware” feature enabled.

CWE(s)
CWE-476

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

zyxel
atp100 firmware
5.37 · 4.32 — 5.37
zyxel
atp100w firmware
5.37 · 4.32 — 5.37
zyxel
atp200 firmware
5.37 · 4.32 — 5.37
zyxel
atp500 firmware
5.37 · 4.32 — 5.37
zyxel
atp700 firmware
5.37 · 4.32 — 5.37
zyxel
atp800 firmware
5.37 · 4.32 — 5.37
zyxel
usg flex 100 firmware
5.37 · 4.50 — 5.37
zyxel
usg flex 100ax firmware
5.37 · 4.50 — 5.37
zyxel
usg flex 100h firmware
5.37 · 4.50 — 5.37
zyxel
usg flex 100w firmware
5.37 · 4.50 — 5.37
+9 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References