How severe is CVE-2024-45191?

CVE-2024-45191 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-45191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45191?

CVE-2024-45191 affects Matrix Olm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45191?

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

Does CVE-2024-45191 have an EU (EUVD) identifier?

Yes. CVE-2024-45191 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41367.

When was CVE-2024-45191 published?

CVE-2024-45191 was published on 2024-08-22 and last updated on 2026-06-17.

CVE-2024-45191

CVE-2024-45191 is a medium-severity vulnerability in Matrix Olm with a CVSS 3.x base score of 5.3. 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-208.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41367
Weakness: CWE-208
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. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. 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-2024-45191?: An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. 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-2024-45191?: CVE-2024-45191 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-45191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45191?: CVE-2024-45191 affects Matrix Olm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45191?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-45191 have an EU (EUVD) identifier?: Yes. CVE-2024-45191 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41367.
When was CVE-2024-45191 published?: CVE-2024-45191 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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