CVE-2023-33855

IBM Common Cryptographic Architecture information disclosure

LOW
3.7
CVSS Score
Published: March 26, 2024 at 02:04 PM UTC
Updated: June 17, 2026 at 06:02 AM UTC
3 products affected across 1 vendorCommon Cryptographic ArchitectureAIXI· also runs on 1 platform

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Severity
LOW3.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Under certain conditions, RSA operations performed by IBM Common Cryptographic Architecture (CCA) 7.0.0 through 7.5.36 may exhibit non-constant-time behavior. This could allow a remote attacker to obtain sensitive information using a timing-based attack. IBM X-Force ID: 257676.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v ≤ 7.5.367.0.0
Affected range stops below 7.5.37, so it looks safe — our inference, not a vendor statement
ibm-aix (environment) · ibm-i (environment) · linux-linux-kernel (environment)
AIX· IBMdevice
80%
All versions
I· IBMdevice
80%
All versions

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWibm
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-385

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