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CVE-2018-20592

20
FAUCET Score

CVE-2018-20592 describes a use-after-free vulnerability in the mxmlAdd function of Mini-XML (mxml) v2.12, affecting products like fedoraproject fedora and msweet mini-xml. This flaw allows remote attackers to trigger a denial-of-service by providing a specially crafted XML file. Rated as Medium severity (CVSS 5.5), it requires user interaction (UI:R) and local access (AV:L) for exploitation, leading to high availability impact (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating low current interest.

Impacted Technologies

VendorProductVersion(s)CPE
2.12CPE matchmatch criteria
cpe:2.3:a:msweet:mini-xml:2.12:*:*:*:*:*:*:*
28CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0149 is in the 82nd percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

github.com / michaelrsweet/mxml/issues/237
Third Party Advisory
github.com / ntu-sec/pocs/blob/master/mxml-53c75b0/crashes/uaf_mxml-node.c:128_1.txt.err
ExploitThird Party Advisory
github.com / ntu-sec/pocs/blob/master/mxml-53c75b0/crashes/uaf_mxml-node.c:128_2.txt.err
ExploitThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/N53IJHDYR5HVQLKH4J6B27OEQLGKSGY5
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/RNWF6BAU7S42O4LE4B74KIMHFE2HDNMI