CVE-2022-0342

Q: How do I fix CVE-2022-0342?

Published advisories record a fix for 12 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Q: Is CVE-2022-0342 being actively exploited?

Not that we know of. CVE-2022-0342 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 84.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 100% of all scored CVEs.

Q: How severe is CVE-2022-0342?

CVE-2022-0342 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2022-0342 affect?

Published advisories record a fix for nsg300 firmware (NVD), usg40 firmware (NVD), usg40w firmware (NVD), usg60 firmware (NVD), and 8 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICALEPSS 100th pctl

9.8

CVSS v3

NVD

Description

An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.

CWE-287Improper Authentication

How to fix

Remediation Available

nsg300 firmwareNVD

Affected:>= 1.20, < 1.33Fixed in:1.33CVE-2022-0342derived from NVD

usg40 firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

usg40w firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

usg60 firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

usg60w firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

vpn1000 firmwareNVD

Affected:>= 4.30, < 5.21Fixed in:5.21CVE-2022-0342derived from NVD

vpn100 firmwareNVD

Affected:>= 4.30, < 5.21Fixed in:5.21CVE-2022-0342derived from NVD

vpn300 firmwareNVD

Affected:>= 4.30, < 5.21Fixed in:5.21CVE-2022-0342derived from NVD

vpn50 firmwareNVD

Affected:>= 4.30, < 5.21Fixed in:5.21CVE-2022-0342derived from NVD

zywall 1100 firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

zywall 110 firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

zywall 310 firmwareNVD

Affected:>= 4.20, < 4.71Fixed in:4.71CVE-2022-0342derived from NVD

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

84.42%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Vendor Advisory1

zyxel.com

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	Fix

Common questions

How do I fix CVE-2022-0342?

Published advisories record a fix for 12 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2022-0342 being actively exploited?

Not that we know of. CVE-2022-0342 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 84.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 100% of all scored CVEs.

How severe is CVE-2022-0342?

CVE-2022-0342 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2022-0342 affect?

Published advisories record a fix for nsg300 firmware (NVD), usg40 firmware (NVD), usg40w firmware (NVD), usg60 firmware (NVD), and 8 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.