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WatchlistCritical

CVE-2023-31465Timekeeper Vulnerability

By intercepting requests from various timekeeper streams, it is possible to find the getsamplebacklog call.

Published Jul 26, 2023 · Updated Nov 21, 2024

Key Facts

Patch immediately
  • CVE-2023-31465 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Timekeeper (Fsmlabs).
  • It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Nov 15, 2023. A public exploit is reported by tracking sources, but no code link is listed yet.
  • EPSS estimates a 46% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Timekeeper <=8.0.28, Timekeeper 8.0.28.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Scores

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

46%

Higher than 98.8% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

40/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Nov 15, 2023

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

1

Proof-of-concept links

In-the-wild evidence

10

Reports of active use

Description

An issue was discovered in FSMLabs TimeKeeper 8.0.17 through 8.0.28. By intercepting requests from various timekeeper streams, it is possible to find the getsamplebacklog call. Some query parameters are passed directly in the URL and named arg[x], with x an integer starting from 1; it is possible to modify arg[2] to insert Bash code that will be executed directly by the server.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CIRCL KEVNov 15, 2023n/aNot reported
Industry KEV feedNov 15, 2023n/aNot reported

Affected Products

1 affected entries in total
ProductAffected versionsFixed in
TimekeeperFsmlabsSee advisory8.0.28

Patched Releases

Timekeeper

<=8.0.28

Timeline

  1. Publicly disclosed

    Jul 26, 2023

  2. Added to CIRCL KEV

    Nov 15, 2023

  3. Added to Industry KEV feed

    Nov 15, 2023

  4. Last updated

    Nov 21, 2024

References

6 more references in the full CVE brief

FAQ

Common Questions.

Is CVE-2023-31465 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.

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Figures as of Oct 19, 2026. Compiled by Brandefense technologies from public vulnerability catalogs; scoring as described in How it works.

To report an error, contact Brandefense.