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CVE-2020-28591

22
FAUCET Score

CVE-2020-28591 describes an out-of-bounds read vulnerability in the AMFParserContext::endElement() function within Slic3r libslic3r 1.3.0 and Master Commit 92abbc42, affecting products like Fedora. This flaw allows an unauthenticated attacker to trigger information disclosure by providing a specially crafted AMF file, rated as Medium severity (CVSS 6.5) due to its high confidentiality impact. While user interaction is required, the attack complexity is low. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.0CPE matchmatch criteria
cpe:2.3:a:slic3r:libslic3r:1.3.0:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.90%
Probability of exploitation in next 30 days
EPSS Percentile
77.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0190 is in the 89th percentile among its peer group of 26,219 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KBEK4H23AS6TKTGU2OTMHAZZYNECQVCB
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TCSYYURJTUKJSEZIPDAXK4NHRXZMHIVA
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/WJPM24DY36EH3HFJGAXDLGFT43VZWLJ7
talosintelligence.com / vulnerability_reports/TALOS-2020-1215
ExploitThird Party Advisory