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Fencer Vulns
medium 5.5

CVE-2020-36619 json

multimon-ng demod_flex.c add_ch format string

published 2022-12-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-24079

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

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.

Patch / fix

  • multimon-ng_project multimon-ng 1.2.0
  • multimon-ng Debian 14, Debian 13, Debian 12 1.2.0+dfsg-1

debian advisories DEBIAN-CVE-2020-36619

  • multimon-ng Package Hub 15 SP3, openSUSE Leap 15.3 1.2.0-bp153.2.3.1
  • multimon-ng Package Hub 15 SP4, openSUSE Leap 15.4 1.2.0-bp154.2.3.1

opensuse advisories openSUSE-SU-2023:0004-1openSUSE-SU-2022:10253-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • unspecified multimon-ng

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-134 Use of Externally-Controlled Format String

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.