What is CVE-2019-12937?

CVE-2019-12937 is a high-severity vulnerability in Toaruos Project, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2019-06-23.

How severe is CVE-2019-12937?

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

Is CVE-2019-12937 known to be exploited?

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

Buffer overflow in Toaruos Project

CVE-2019-12937

apps/gsudo.c in gsudo in ToaruOS through 1.10.9 has a buffer overflow allowing local privilege escalation to the root user via the DISPLAY environment variable.

Vulnerability class: Buffer Overflow

Published 2019-06-23 · 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 (42.8th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% 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

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

AkashicYiTai/CVE-2019-12937-ToaruOS

References

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

Frequently asked questions

What is CVE-2019-12937?: CVE-2019-12937 is a high-severity vulnerability in Toaruos Project, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2019-06-23.
How severe is CVE-2019-12937?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2019-12937 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.