CVE-2025-29662: A RCE vulnerability in the core application in LandChat 3.25.12.18 allows an unauthenticated attacker to execu

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2025-29662 is a critical-severity flaw (CVSS 9.8) affecting landchat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A RCE vulnerability in the core application in LandChat 3.25.12.18 allows an unauthenticated attacker to execute system code via remote network access.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-94
Published	2025-04-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: landchat

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

Am I affected?

Timeline

2025-04-17 17:15 UTCPublished CVE record published
2026-06-17 09:05 UTCUpdated Record last modified

landchat landchat DOWNGRADE

Affected: 3.25.12.18

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.25.12.18

1. Check installed version

apt-cache policy landchat || rpm -q landchat || landchat --version

2. No fixed release: DOWNGRADE to a release before 3.25.12.18 (Debian / Ubuntu)

apt-cache madison landchat sudo apt install landchat=<VERSION_BEFORE_3.25.12.18> sudo apt-mark hold landchat

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list landchat sudo dnf downgrade landchat-<VERSION_BEFORE_3.25.12.18> sudo dnf versionlock add landchat

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-29662?

landchat: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-29662 being exploited?

CVE-2025-29662 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-2025-29662 affect?

CVE-2025-29662 affects landchat. Severity is critical (CVSS 9.8). A RCE vulnerability in the core application in LandChat 3.25.12.18 allows an unauthenticated attacker to execute system code via remote network access.

How urgent is CVE-2025-29662?

Priority 57/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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