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CVE-2025-3791

17
FAUCET Score

CVE-2025-3791 is a critical heap-based buffer overflow vulnerability in symisc UnQLite, specifically affecting the jx9MemObjStore function in unqlite.c. This flaw allows a local attacker to achieve a low-impact compromise of confidentiality, integrity, and availability. While the CVSS score is 5.3 (MEDIUM), public exploit code exists, increasing the risk of exploitation. There is currently no evidence of active exploitation, and community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
SymiscUnQLite
957c377cb691a4f617db9aba5cc46d90425071e2CNA affected

CVSS Data

CVSS version used by this source: 4.0

4.8MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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:X

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

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
10.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 50th percentile among its peer group of 15,940 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 / symisc/unqlite/issues/173
github.com / user-attachments/files/19652580/unqlite-reproduce-heap-overflow.zip
vuldb.com
vuldb.com
vuldb.com