CVE-2024-22340Network attack vector

Sensitive-information disclosure via ECDSA signature timing

Published Mar 11, 2025 · Updated Sep 1, 2025

Timing side channel in IBM CCA and 4769 Developers Toolkit 7.0.0 through 7.5.51 allows remote attackers to obtain sensitive information. ECDSA signature creation leaks secret-dependent timing differences to repeated remote measurements. Exploitation requires a victim to interact with attacker-controlled content, and IBM does not further identify the disclosed material.

CVSS severity6.5
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Timing side channel in IBM CCA and 4769 Developers Toolkit 7.0.0 through 7.5.51 allows remote attackers to obtain sensitive information. ECDSA signature creation leaks secret-dependent timing differences to repeated remote measurements. Exploitation requires a victim to interact with attacker-controlled content, and IBM does not further identify the disclosed material.

The record

CVE
CVE-2024-22340
Published
Mar 11, 2025
Updated
Sep 1, 2025
Vendor
IBM
Product
Common Cryptographic Architecture
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2025Record 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=7.0.0 <=7.5.51

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · Common Cryptographic Architectureversion=7.0.0 <=7.5.51
IBM · 4769 Developers Toolkitversion=7.0.0 <=7.5.51

Published CVSS scores

6.5IBM X-ForceCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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