CVE-2024-6145

Adjacent-network code execution via Cookie format string

Published Jun 18, 2024 · Updated Aug 1, 2024

Format-string injection in Actiontec WCB6200Q 1.2L.03.5 allows remote attackers on an adjacent network to execute arbitrary code. The HTTP server interprets format specifiers supplied in a crafted Cookie header instead of treating the header value only as data. No authentication or user interaction is required, and successful exploitation runs code in the HTTP server's context.

CVSS severity8.8
High
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Format-string injection in Actiontec WCB6200Q 1.2L.03.5 allows remote attackers on an adjacent network to execute arbitrary code. The HTTP server interprets format specifiers supplied in a crafted Cookie header instead of treating the header value only as data. No authentication or user interaction is required, and successful exploitation runs code in the HTTP server's context.

The record

CVE
CVE-2024-6145
Published
Jun 18, 2024
Updated
Aug 1, 2024
Vendor
ActionTech
Product
WCB6200Q
Classifications
CWE-134, CAPEC-67, CAPEC-135, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.2L.03.5

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ActionTech · WCB6200Qversion=1.2L.03.5
ActionTech · WCB6200Q Firmwareversion=1.2l.03.5

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8Zero Day InitiativeCVSS:3.0/AV:A/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.

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No observations available

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

Weakness, pattern, technique

CWE-134Use of Externally-Controlled Format String
CAPEC-67String Format Overflow in syslog()
CAPEC-135Format String Injection
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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