HOMEVULNERABILITIESCVE-2024-45191
MEDIUM

CVE-2024-45191

CWE-208Published: August 22, 2024· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2024-45191 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.3.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

matrix1 product(s)
olm
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985

All References (4)

→
https://gitlab.matrix.org/matrix-org/olm/Product
→
https://gitlab.matrix.org/matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985Patch
→
https://news.ycombinator.com/item?id=41249371Issue Tracking
→
https://soatok.blog/2024/08/14/security-issues-in-matrixs-olm-library/Exploit

Quick Facts

CVE IDCVE-2024-45191
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-208
CISA KEVNo
Affected1 vendor(s)
PublishedAug 22, 2024

Related CVEs (CWE-208)

CVE-2021-43298
9.8
CVE-2021-21575
9.8
CVE-2023-41313
9.8
CVE-2024-42512
8.6
CVE-2025-53940
8.5
CVE-2026-54736
8.2

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-45191 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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