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CVE-2018-18820

53
FAUCET Score

CVE-2018-18820 describes a buffer overflow vulnerability in the URL-authentication backend of Icecast versions prior to 2.4.4, affecting Debian and Xiph Icecast products. This high-severity flaw (CVSS 8.1) can be triggered remotely by an unauthenticated attacker sending a crafted HTTP request, potentially leading to denial of service or remote code execution. While no public exploit code or active exploitation is reported, the vulnerability has garnered significant community discussion and media coverage, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.4CPE matchmatch criteria
cpe:2.3:a:xiph:icecast:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
48.94%
Probability of exploitation in next 30 days
EPSS Percentile
98.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.4894 is in the 98th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

gentooworkaround availablevia nvd_reference
View patch

References

lists.debian.org / debian-lts-announce/2018/11/msg00033.html
Third Party Advisory
security.gentoo.org / glsa/201811-09
MitigationThird Party Advisory
debian.org / security/2018/dsa-4333
Third Party Advisory
openwall.com / lists/oss-security/2018/11/01/3
Mailing ListPatchThird Party Advisory
securitytracker.com / id/1042019
Third Party AdvisoryVDB Entry