PT-2021-10961 · Nomacs+1 · Nomacs+1

Aurorainfinity · Published 2020-06-26 · Updated 2021-11-12 · CVE-2020-23884

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Nomacs version 3.15.0

Description: A buffer overflow in the software allows attackers to cause a denial of service (DoS) via a crafted MNG file.

Recommendations: For Nomacs version 3.15.0, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2026-06435

CVE-2020-23884

Affected Products

Debian

Nomacs

References · 15

• 🔥 https://github.com/nomacs/nomacs/issues/516 · Exploit
• https://osv.dev/vulnerability/CVE-2020-23884 · Vendor Advisory
• https://nomacs.org · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-23884 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2026-0518SE47 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-23884 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-23884 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-23884 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-23884 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2026-0421SE17 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06435 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-23884 · Vendor Advisory
• https://github.com/qt/qtbase/commit/1a63409579ff0e9ce524c09701c1ef8bd2d99f25 · Note
• https://github.com/Aurorainfinity/vulnerabilities/blob/master/nomacs/readme.md · Note
• https://t.me/cibsecurity/32211 · Telegram Post