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CVE-2018-1000221

30
FAUCET Score

CVE-2018-1000221 is a critical buffer overflow vulnerability affecting pkgconf versions 1.5.0 through 1.5.2, specifically within the dequote() function. This flaw allows for remote code execution via specially crafted .pc files, as indicated by its CVSS score of 9.8 (Critical) with a network attack vector and no required user interaction. While the vulnerability has been patched in version 1.5.3, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.5.0, <= 1.5.2CPE matchmatch criteria
cpe:2.3:a:pkgconf:pkgconf:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 55th 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

Vendor Advisories (1)

redhatCVE-2018-1000221Low

pkgconf: 1 byte out of bounds read for 0 length keys

Aug 24, 2018

References

git.dereferenced.org / pkgconf/pkgconf/pulls/3
Third Party Advisory