What’s Vulnerable › Vulnerabilities

CVE-2020-36619: multimon-ng demod_flex.c add_ch format string

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-19 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was found in multimon-ng. It has been rated as critical. This issue affects the function add_ch of the file demod_flex.c. The manipulation of the argument ch leads to format string. Upgrading to version 1.2.0 is able to address this issue. The name of the patch is e5a51c508ef952e81a6da25b43034dd1ed023c07. It is recommended to upgrade the affected component. The identifier VDB-216269 was assigned to this vulnerability.

Affected products

• multimon-ng: before 1.2.0 — fixed in 1.2.0

How to fix

Upgrade to a fixed version: multimon-ng 1.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/EliasOenal/multimon-ng/commit/e5a51c508ef952e81a6da25b43034dd1ed023c07
• https://github.com/EliasOenal/multimon-ng/pull/160
• https://github.com/EliasOenal/multimon-ng/releases/tag/1.2.0
• https://vuldb.com/?id.216269
• https://github.com/EliasOenal/multimon-ng/commit/e5a51c508ef952e81a6da25b43034dd1ed023c07
• https://github.com/EliasOenal/multimon-ng/pull/160
• https://github.com/EliasOenal/multimon-ng/releases/tag/1.2.0
• https://vuldb.com/?id.216269

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