CVE-2024-5288Public exploit

ECDSA key disclosure via fault-result oracle

Published Aug 27, 2024 · Updated Aug 27, 2024

Side-channel exposure in wolfSSL 5.7.0 and earlier allows local users to recover private ECDSA keys through FAULT+PROBE. The WOLFSSL_CHECK_SIG_FAULTS verify-after-sign path aborts faulted TLS signing operations, exposing a success-rate oracle that reveals key bits. Exploitation requires Rowhammer-capable DRAM, fine-grained device control, repeated signing requests, and the affected fault-check build configuration.

CVSS severity5.9
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Side-channel exposure in wolfSSL 5.7.0 and earlier allows local users to recover private ECDSA keys through FAULT+PROBE. The WOLFSSL_CHECK_SIG_FAULTS verify-after-sign path aborts faulted TLS signing operations, exposing a success-rate oracle that reveals key bits. Exploitation requires Rowhammer-capable DRAM, fine-grained device control, repeated signing requests, and the affected fault-check build configuration.

The record

CVE
CVE-2024-5288
Published
Aug 27, 2024
Updated
Aug 27, 2024
Vendor
wolfSSL
Product
wolfSSL
Classifications
CWE-922, CAPEC-624, T1552.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.7.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

wolfSSL · wolfSSLversion=0 <=5.7.0

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.1wolfSSL Inc.CVSS:3.1/AV:L/AC:H/PR:N/UI:N/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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-922Insecure Storage of Sensitive Information
CAPEC-624Fault Injection
T1552.004Unsecured Credentials Private Keys

Public exploit references

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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