How severe is CVE-2024-45193?

CVE-2024-45193 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-45193 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45193?

CVE-2024-45193 affects Matrix Olm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45193?

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

Does CVE-2024-45193 have an EU (EUVD) identifier?

Yes. CVE-2024-45193 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41369.

When was CVE-2024-45193 published?

CVE-2024-45193 was published on 2024-08-22 and last updated on 2026-06-17.

CVE-2024-45193

CVE-2024-45193 is a medium-severity vulnerability in Matrix Olm with a CVSS 3.x base score of 4.3. 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-327.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41369
Weakness: CWE-327
Affected product: Matrix Olm
Published: 2024-08-22
Last modified: 2026-06-17

Description

An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Frequently asked questions

What is CVE-2024-45193?: An issue was discovered in Matrix libolm through 3.2.16. There is Ed25519 signature malleability due to lack of validation criteria (does not ensure that S < n). This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
How severe is CVE-2024-45193?: CVE-2024-45193 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-45193 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45193?: CVE-2024-45193 affects Matrix Olm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45193?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-45193 have an EU (EUVD) identifier?: Yes. CVE-2024-45193 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41369.
When was CVE-2024-45193 published?: CVE-2024-45193 was published on 2024-08-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*

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