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CVE-2015-3890

19
FAUCET Score

CVE-2015-3890 is a use-after-free vulnerability affecting Open LiteSpeed versions prior to 1.3.10. This high-severity flaw (CVSS 7.5) allows an unauthenticated attacker to cause a denial of service remotely with low attack complexity. While no public exploit code or active exploitation has been observed, and there is minimal community discussion or media coverage, the vulnerability could still impact unpatched systems.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.10CPE matchmatch criteria
cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.06%
Probability of exploitation in next 30 days
EPSS Percentile
61.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 38th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

security-assessment.com / files/documents/advisory/Open%20Litespeed%20Use%20After%20Free%20Vulnerability.pdf
Technical DescriptionThird Party Advisory