CVE-2024-7261Network attack vector

Unauthenticated OS command execution via crafted cookie

Published Sep 3, 2024 · Updated Sep 5, 2024

OS command injection in Zyxel appliance firmware allows remote attackers to execute OS commands through a crafted cookie sent to the CGI program. The CGI program fails to neutralize special elements in the cookie-supplied host parameter before using it in an OS command. Unauthenticated network access is sufficient; affected releases include NWA1123ACv3 6.70(ABVT.4) and earlier, WAC500 6.70(ABVS.4) and earlier, WAX655E 7.00(ACDO.1) and earlier, WBE530 7.00(ACLE.1) and earlier, and USG LITE 60AX V2.00(ACIP.2).

CVSS severity9.8
Critical
EPSS probability11.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Zyxel appliance firmware allows remote attackers to execute OS commands through a crafted cookie sent to the CGI program. The CGI program fails to neutralize special elements in the cookie-supplied host parameter before using it in an OS command. Unauthenticated network access is sufficient; affected releases include NWA1123ACv3 6.70(ABVT.4) and earlier, WAC500 6.70(ABVS.4) and earlier, WAX655E 7.00(ACDO.1) and earlier, WBE530 7.00(ACLE.1) and earlier, and USG LITE 60AX V2.00(ACIP.2).

The record

CVE
CVE-2024-7261
Published
Sep 3, 2024
Updated
Sep 5, 2024
Vendor
Zyxel Networks
Product
WBE530 Firmware
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=7.00\(ACLE.1\)
  2. Affected versionversion=<= 7.00(ACLE.1)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zyxel Networks · WBE530 Firmwareversion=0 <=7.00\(ACLE.1\); version=<= 7.00(ACLE.1)
Zyxel Networks · WAX655E Firmwareversion=0 <=7.00\(ACDO.1\); version=<= 7.00(ACDO.1)
Zyxel Networks · WAC500 Firmwareversion=0 <=6.70\(ABVS.4\); version=<= 6.70(ABVS.4)
Zyxel Networks · USG LITE 60AX Firmwareversion=0 <=V2.00\(ACIP.2\); version=V2.00(ACIP.2)
Zyxel Networks · NWA1123ACv3 Firmwareversion=0 <=6.70\(ABVT.4\); version=<= 6.70(ABVT.4)

Published CVSS scores

9.8Zyxel CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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