What is CVE-2015-3890?

CVE-2015-3890 is a high-severity vulnerability in Litespeedtech Openlitespeed, classified under Use After Free. CVSS score: 7.5/10. Published 2017-09-20.

How severe is CVE-2015-3890?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2015-3890 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Litespeedtech Openlitespeed

CVE-2015-3890

Use-after-free vulnerability in Open Litespeed before 1.3.10.

Vulnerability class: Use-After-Free

Published 2017-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Litespeedtech Openlitespeed

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

www.security-assessment.com/files/documents/advisory/Open Litespeed Use After F… (Technical Description, Third Party Advisory)

Frequently asked questions

What is CVE-2015-3890?: CVE-2015-3890 is a high-severity vulnerability in Litespeedtech Openlitespeed, classified under Use After Free. CVSS score: 7.5/10. Published 2017-09-20.
How severe is CVE-2015-3890?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2015-3890 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.