CVE-2019-12937: apps/gsudo.c in gsudo in ToaruOS through 1.10.9 has a buffer overflow allowing local privilege escalation to t

Q: How do I fix CVE-2019-12937?

toaruos: upgrade to newer than 1.10.9. Exact commands for each OS are on this page.

Q: Is CVE-2019-12937 being exploited?

CVE-2019-12937 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-12937 affect?

CVE-2019-12937 affects toaruos. Severity is high (CVSS 7.8). 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.

Q: How urgent is CVE-2019-12937?

Priority 43/100. High severity; Public exploit reference

This month

HIGH 7.8UPGRADE

CVE-2019-12937 is a high-severity flaw (CVSS 7.8) affecting toaruos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-787
Published	2019-06-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: toaruos project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-23 23:15 UTCPublished CVE record published
2026-06-17 02:15 UTCUpdated Record last modified

toaruos project toaruos UPGRADE

Affected: <= 1.10.9

Fixed in: newer than 1.10.9

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-12937?

toaruos: upgrade to newer than 1.10.9. Exact commands for each OS are on this page.

Is CVE-2019-12937 being exploited?

CVE-2019-12937 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-12937 affect?

CVE-2019-12937 affects toaruos. Severity is high (CVSS 7.8). 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.

How urgent is CVE-2019-12937?

Priority 43/100. High severity; Public exploit reference

Related CVEs

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CVE-2022-38932 HIGH 7.8 MITIGATE readelf in ToaruOS 2.0.1 has a global overflow allowing RCE when parsing a crafted ELF file.
CVE-2021-36710 HIGH 8.8 MITIGATE ToaruOS 1.99.2 is affected by incorrect access control via the kernel
CVE-2019-13049 HIGH 7.8 MITIGATE An integer wrap in kernel/sys/syscall.c in ToaruOS 1.10.10 allows users to map arbitrary kernel pages into use
CVE-2019-13048 MEDIUM 5.5 UPGRADE kernel/sys/syscall.c in ToaruOS through 1.10.9 allows a denial of service upon a critical error in certain sys

References

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