Cyber Resilience

CVE-2023-33011

High

Published: 17 July 2023

Published
17 July 2023
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0014 33.5th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-33011 is a high-severity Use of Externally-Controlled Format String (CWE-134) vulnerability in Zyxel Usg 2200-Vpn Firmware. Its CVSS base score is 8.8 (High).

Operationally, ranked at the 33.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware…

more

versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted PPPoE configuration on an affected device when the cloud management mode is enabled.

CWE(s)
CWE-134

Related Threats

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

Affected Assets

zyxel
usg 2200-vpn firmware
5.00 — 5.37
zyxel
usg flex 100 firmware
5.00 — 5.37
zyxel
usg flex 100w firmware
5.00 — 5.37
zyxel
usg flex 200 firmware
5.00 — 5.37
zyxel
usg flex 50 firmware
5.00 — 5.37
zyxel
usg flex 500 firmware
5.00 — 5.37
zyxel
usg flex 50w firmware
5.00 — 5.37
zyxel
usg flex 700 firmware
5.00 — 5.37
zyxel
zywall vpn100 firmware
5.00 — 5.37
zyxel
zywall vpn2s firmware
5.00 — 5.37
+12 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