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CVE-2022-26531

Published: May 24, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-20
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
5.8%
Top 7.8%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

Description

Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:LA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

vpn100 firmwarezyxelNetworking Infrastructure
vpn1000 firmwarezyxelNetworking Infrastructure
vpn300 firmwarezyxelNetworking Infrastructure
vpn50 firmwarezyxelNetworking Infrastructure
atp100 firmwarezyxelNetworking Infrastructure
zyxelcommercialTWNetworking Infrastructureaka zyxel communications corp.
and 106 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

http://packetstormsecurity.com/files/167464/Zyxel-Buffer-Overflow-Format-String-Command-Injection.html
packetstormsecurity.com
http://packetstormsecurity.com/files/177036/Zyxel-zysh-Format-String-Proof-Of-Concept.html
packetstormsecurity.com
http://seclists.org/fulldisclosure/2022/Jun/15
seclists.org
and 5 more references View all →

Timeline

Published
May 24, 2022
Last Updated
Nov 21, 2024

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