What is CVE-2019-12835?

CVE-2019-12835 is a critical-severity vulnerability in Leanify Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-06-15.

How severe is CVE-2019-12835?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Leanify Project

CVE-2019-12835

formats/xml.cpp in Leanify 0.4.3 allows for a controlled out-of-bounds write in xml_memory_writer::write via characters that require escaping.

Vulnerability class: Buffer Overflow

Published 2019-06-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.4th percentile), scored 2026-10-25.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Leanify Project — versions 0.4.3

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/JayXon/Leanify/issues/52 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-12835?: CVE-2019-12835 is a critical-severity vulnerability in Leanify Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-06-15.
How severe is CVE-2019-12835?: Critical severity. CVSS v3 base score is 9.8 out of 10.