How severe is CVE-2024-1543?

CVE-2024-1543 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-1543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-1543?

CVE-2024-1543 affects Wolfssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-1543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-1543 have an EU (EUVD) identifier?

Yes. CVE-2024-1543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-17290.

When was CVE-2024-1543 published?

CVE-2024-1543 was published on 2024-08-29 and last updated on 2026-06-17.

CVE-2024-1543

CVE-2024-1543 is a medium-severity vulnerability in Wolfssl with a CVSS 3.x base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-17290
Weakness: CWE-203
Affected product: Wolfssl
Published: 2024-08-29
Last modified: 2026-06-17

Description

The side-channel protected T-Table implementation in wolfSSL up to version 5.6.5 protects against a side-channel attacker with cache-line resolution. In a controlled environment such as Intel SGX, an attacker can gain a per instruction sub-cache-line resolution allowing them to break the cache-line-level protection. For details on the attack refer to: https://doi.org/10.46586/tches.v2024.i1.457-500

Frequently asked questions

What is CVE-2024-1543?: The side-channel protected T-Table implementation in wolfSSL up to version 5.6.5 protects against a side-channel attacker with cache-line resolution. In a controlled environment such as Intel SGX, an attacker can gain a per instruction sub-cache-line resolution allowing them to break the cache-line-level protection. For details on the attack refer to: https://doi.org/10.46586/tches.v2024.i1.457-500
How severe is CVE-2024-1543?: CVE-2024-1543 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-1543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-1543?: CVE-2024-1543 affects Wolfssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-1543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-1543 have an EU (EUVD) identifier?: Yes. CVE-2024-1543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-17290.
When was CVE-2024-1543 published?: CVE-2024-1543 was published on 2024-08-29 and last updated on 2026-06-17.

References

https://github.com/wolfSSL/wolfssl/blob/master/ChangeLog.md#wolfssl-release-566-dec-19-2023

Affected products (1)

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

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