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CVE-2019-20918

22
FAUCET Score

CVE-2019-20918 describes a use-after-free vulnerability in the silence module of InspIRCd versions prior to 3.1.0, allowing any fully connected user to remotely crash the server. With a CVSS score of 6.5 (Medium), this vulnerability is easily exploitable over the network with low privileges and no user interaction, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0, < 3.1.0CPE matchmatch criteria
cpe:2.3:a:inspircd:inspircd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0149 is in the 85th percentile among its peer group of 21,951 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.0 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

docs.inspircd.org / security/2019-01
Vendor Advisory
github.com / inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51
PatchThird Party Advisory
github.com / inspircd/inspircd/commit/bcd65de1ec4bb71591ae417fee649d7ecd37cd57
PatchThird Party Advisory