CVE-2025-65834: Meltytech Shotcut 25.10.31 is vulnerable to Buffer Overflow

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2025-65834 is a critical-severity flaw (CVSS 9.8) affecting shotcut. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Meltytech Shotcut 25.10.31 is vulnerable to Buffer Overflow. A memory access violation occurs when processing MLT project files with manipulated width and height parameters. By setting these values to extremely large numbers, the application attempts to allocate excessive memory during image processing, triggering a buffer overflow in the mlt_image_fill_white function.

Why this priority

Critical severity
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	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-120
Published	2025-12-16
Last modified	2026-10-13

Publisher (CNA): MITRE · Vendor: meltytech

Last updated 2026-10-13 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-16 20:15 UTCPublished CVE record published
2026-10-13 11:10 UTCUpdated Record last modified

meltytech shotcut DOWNGRADE

Affected: 25.10.31

Fixed in: no fixed release known

Safe to downgrade to: a release before 25.10.31

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 25.10.31 (Debian / Ubuntu)

apt-cache madison shotcut sudo apt install shotcut=<VERSION_BEFORE_25.10.31> sudo apt-mark hold shotcut

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

dnf --showduplicates list shotcut sudo dnf downgrade shotcut-<VERSION_BEFORE_25.10.31> sudo dnf versionlock add shotcut

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-2025-65834?

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

Is CVE-2025-65834 being exploited?

CVE-2025-65834 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-2025-65834 affect?

CVE-2025-65834 affects shotcut. Severity is critical (CVSS 9.8). Meltytech Shotcut 25.10.31 is vulnerable to Buffer Overflow. A memory access violation occurs when processing MLT project files with manipulated width and height parameters. By setting these values to extremely large numbers, the applicatio

How urgent is CVE-2025-65834?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

References

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