What is CVE-2019-13048?

CVE-2019-13048 is a medium-severity vulnerability in Toaruos Project, classified under Integer Overflow or Wraparound. CVSS score: 5.5/10. Published 2019-06-29.

How severe is CVE-2019-13048?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Integer overflow in Toaruos Project

CVE-2019-13048

kernel/sys/syscall.c in ToaruOS through 1.10.9 allows a denial of service upon a critical error in certain sys_sbrk allocation patterns (involving PAGE_SIZE, and a value less than PAGE_SIZE).

Vulnerability class: Integer Overflow

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Toaruos Project

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

github.com/mehsauce/kowasuos/blob/master/dos/kowasu-sbrk.c (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-13048?: CVE-2019-13048 is a medium-severity vulnerability in Toaruos Project, classified under Integer Overflow or Wraparound. CVSS score: 5.5/10. Published 2019-06-29.
How severe is CVE-2019-13048?: Medium severity. CVSS v3 base score is 5.5 out of 10.