CVE-2018-25259: Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field

Q: How do I fix CVE-2018-25259?

terminal services manager: upgrade to newer than 3.1. Exact commands for each OS are on this page.

Q: Is CVE-2018-25259 being exploited?

CVE-2018-25259 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-2018-25259 affect?

CVE-2018-25259 affects terminal services manager. Severity is high (CVSS 8.4). Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field that allows local attackers to execute arbitrary code by triggering structured exception handling. Attackers can craft a maliciou

Q: How urgent is CVE-2018-25259?

Priority 37/100. High severity; Public exploit reference

Routine

HIGH 8.4UPGRADE

CVE-2018-25259 is a high-severity flaw (CVSS 8.4) affecting terminal services manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field that allows local attackers to execute arbitrary code by triggering structured exception handling. Attackers can craft a malicious input file with shellcode and jump instructions that overwrite the SEH handler pointer to execute calc.exe or other payloads when imported through the add computers wizard.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-04-22
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: lizardsystems

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

Am I affected?

Timeline

2026-04-22 16:16 UTCPublished CVE record published
2026-06-17 01:55 UTCUpdated Record last modified

lizardsystems terminal services manager UPGRADE

Affected: <= 3.1

Fixed in: newer than 3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy terminal-services-manager || rpm -q terminal-services-manager || terminal-services-manager --version

2. UPGRADE to newer than 3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade terminal-services-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade terminal-services-manager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2018-25259?

terminal services manager: upgrade to newer than 3.1. Exact commands for each OS are on this page.

Is CVE-2018-25259 being exploited?

CVE-2018-25259 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-2018-25259 affect?

CVE-2018-25259 affects terminal services manager. Severity is high (CVSS 8.4). Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field that allows local attackers to execute arbitrary code by triggering structured exception handling. Attackers can craft a maliciou

How urgent is CVE-2018-25259?

Priority 37/100. High severity; Public exploit reference

References

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