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CVE-2025-3512

17
FAUCET Score

CVE-2025-3512 is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter affecting Qt versions 6.8.0 through 6.8.3. It requires a user to process a specially crafted markdown file, resulting in a CVSS 4.8 Medium severity score due to its local attack vector and potential for limited impact (VA:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
The Qt CompanyQt
>= 6.8.0, < 6.8.4CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 4.0

4.8MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 16th percentile among its peer group of 5,765 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

Vendor Patches (1)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: qt6

Vendor Advisories (1)

redhatCVE-2025-3512Low

qt6: Buffer overflow in QTextMarkdownImporter

Apr 11, 2025

References

codereview.qt-project.org / c/qt/qtbase/+/635546
openwall.com / lists/oss-security/2025/04/24/4
openwall.com / lists/oss-security/2025/04/24/5
openwall.com / lists/oss-security/2025/04/24/6
openwall.com / lists/oss-security/2025/04/25/1
openwall.com / lists/oss-security/2025/04/25/2