CVE-2023-31465Known exploitationPublic exploitNetwork attack vector

Unauthenticated command execution via getsamplebacklog argument injection

Published Jul 26, 2023 · Updated Oct 23, 2024

OS command injection in FSMLabs TimeKeeper 8.0.17 through 8.0.28 allows remote attackers to execute Bash commands via crafted HTTP requests. The getsamplebacklog handler passes the arg[2] URL query value into a Bash command without neutralizing shell metacharacters, including braces. No authentication or user interaction is required, and successful exploitation runs commands with the TimeKeeper server process's privileges.

CVSS severity9.8
Critical
EPSS probability46.30%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in FSMLabs TimeKeeper 8.0.17 through 8.0.28 allows remote attackers to execute Bash commands via crafted HTTP requests. The getsamplebacklog handler passes the arg[2] URL query value into a Bash command without neutralizing shell metacharacters, including braces. No authentication or user interaction is required, and successful exploitation runs commands with the TimeKeeper server process's privileges.

The record

CVE
CVE-2023-31465
Published
Jul 26, 2023
Updated
Oct 23, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS: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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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