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CVE-2020-23884

20
FAUCET Score

CVE-2020-23884 describes a buffer overflow vulnerability in Nomacs v3.15.0, allowing a denial of service through a specially crafted MNG file. Rated Medium with a CVSS score of 5.5, this vulnerability requires user interaction (UI:R) and local access (AV:L) to trigger, leading to high availability impact (A:H). There is currently no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.15.0CPE matchmatch criteria
cpe:2.3:a:nomacs:nomacs:3.15.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 68th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / Aurorainfinity/vulnerabilities/blob/master/nomacs/readme.md
Broken Link
github.com / nomacs/nomacs/issues/516
ExploitThird Party Advisory
nomacs.org
Vendor Advisory