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CVE-2024-45193

15
FAUCET Score

CVE-2024-45193 describes a medium-severity vulnerability in Matrix libolm versions up to 3.2.16, stemming from Ed25519 signature malleability due to insufficient validation criteria (S < n). This flaw, affecting the libolm implementation of Olm, could lead to a low-impact integrity compromise, though it specifically impacts products no longer supported by their maintainer. With a CVSS score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N), it indicates a network-exploitable vulnerability requiring low privileges and no user interaction. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion, suggesting a low immediate threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.2.16CPE matchmatch criteria
cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 26th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gitlab.matrix.org / matrix-org/olm
Product
gitlab.matrix.org / matrix-org/olm/-/commit/6d4b5b07887821a95b144091c8497d09d377f985
Patch
news.ycombinator.com / item
Issue Tracking
soatok.blog / 2024/08/14/security-issues-in-matrixs-olm-library
Exploit