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Emerging threatsCritical

CVE-2009-3853Tivoli Storage Manager Memory Corruption

Stack-based buffer overflow in the client acceptor daemon (CAD) scheduler in the client in IBM Tivoli Storage Manager (TSM) 5.3 before 5.3.6.7, 5.4 before 5.4.3, 5.5 before 5.5.2.2, and 6.1 before 6.1.0.2, and TSM Express 5.3.3.0 through 5.3.6.6, allows remote attackers to…

Published Nov 4, 2009 · Updated Apr 22, 2026

Key Facts

Patch immediately
  • CVE-2009-3853 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Tivoli Storage Manager (Ibm).
  • It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
  • EPSS estimates a 37% probability of exploitation in the next 30 days.
  • No fixed version is listed yet; check the vendor advisory for mitigations.
  • Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Scores

CVSS v2

9.3

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

37%

Higher than 98.4% of all scored CVEs

Exploit maturity

Weaponized

ATLAS score

56/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Weaponized

Public exploit code

2

Proof-of-concept links

In-the-wild evidence

0

Reports of active use

Description

Stack-based buffer overflow in the client acceptor daemon (CAD) scheduler in the client in IBM Tivoli Storage Manager (TSM) 5.3 before 5.3.6.7, 5.4 before 5.4.3, 5.5 before 5.5.2.2, and 6.1 before 6.1.0.2, and TSM Express 5.3.3.0 through 5.3.6.6, allows remote attackers to execute arbitrary code via crafted data in a TCP packet.

Affected Products

27 affected entries in total
ProductAffected versionsFixed in
Tivoli Storage ManagerIbm5.2.5.3, 5.3, 5.3.0, 5.3.1, 5.3.2, 5.3.2.4, 5.3.3, 5.3.4n/a

Timeline

  1. Publicly disclosed

    Nov 4, 2009

  2. Last updated

    Apr 22, 2026

Weakness Type

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

4 more references in the full CVE brief

FAQ

Common Questions.

Is CVE-2009-3853 On Your Attack Surface?

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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.

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