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CVE-2020-36619

31
FAUCET Score

CVE-2020-36619 is a critical format string vulnerability (CWE-134) in the add_ch function of demod_flex.c within multimon-ng, affecting multimon_ng_project multimon_ng. With a CVSS score of 9.8, it allows unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts over the network. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and community discussion is minimal, upgrading to version 1.2.0 or applying patch e5a51c508ef952e81a6da25b43034dd1ed023c07 is recommended to mitigate this high-risk flaw.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.0CPE matchmatch criteria
cpe:2.3:a:multimon-ng_project:multimon-ng:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 40th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / EliasOenal/multimon-ng/commit/e5a51c508ef952e81a6da25b43034dd1ed023c07
PatchThird Party Advisory
github.com / EliasOenal/multimon-ng/pull/160
PatchThird Party Advisory
github.com / EliasOenal/multimon-ng/releases/tag/1.2.0
Release NotesThird Party Advisory
vuldb.com
Permissions RequiredThird Party AdvisoryVDB Entry