What is CVE-2019-13049?

CVE-2019-13049 is a high-severity vulnerability in Toaruos Project, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2019-06-29.

How severe is CVE-2019-13049?

High severity. CVSS v3 base score is 7.8 out of 10.

Integer overflow in Toaruos Project

CVE-2019-13049

An integer wrap in kernel/sys/syscall.c in ToaruOS 1.10.10 allows users to map arbitrary kernel pages into userland process space via TOARU_SYS_FUNC_MMAP, leading to escalation of privileges.

Vulnerability class: Integer Overflow

Published 2019-06-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (44.1th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Toaruos Project — versions 1.10.10

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-revenge.c (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-13049?: CVE-2019-13049 is a high-severity vulnerability in Toaruos Project, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2019-06-29.
How severe is CVE-2019-13049?: High severity. CVSS v3 base score is 7.8 out of 10.