CVE-2025-59050: Greenshot is an open source Windows screenshot utility

Q: How do I fix CVE-2025-59050?

greenshot: upgrade to 1.3.301. Exact commands for each OS are on this page.

Q: Is CVE-2025-59050 being exploited?

CVE-2025-59050 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-2025-59050 affect?

CVE-2025-59050 affects greenshot. Severity is high (CVSS 8.4). Greenshot is an open source Windows screenshot utility. Greenshot 1.3.300 and earlier deserializes attacker-controlled data received in a WM_COPYDATA message using BinaryFormatter.Deserialize without prior validation or authentication, allo

Q: How urgent is CVE-2025-59050?

Priority 40/100. High severity; Public exploit reference

This month

HIGH 8.4UPGRADE

CVE-2025-59050 is a high-severity flaw (CVSS 8.4) affecting greenshot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Greenshot is an open source Windows screenshot utility. Greenshot 1.3.300 and earlier deserializes attacker-controlled data received in a WM_COPYDATA message using BinaryFormatter.Deserialize without prior validation or authentication, allowing a local process at the same integrity level to trigger arbitrary code execution inside the Greenshot process. The vulnerable logic resides in a WinForms WndProc handler for WM_COPYDATA (message 74) that co

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	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-502
Published	2025-09-16
Last modified	2026-10-19

Publisher (CNA): GitHub, Inc. · Vendor: getgreenshot

Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-16 17:15 UTCPublished CVE record published
2026-10-19 17:10 UTCUpdated Record last modified

getgreenshot greenshot UPGRADE

Affected: < 1.3.301

Fixed in: 1.3.301

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.3.301 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade greenshot

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade greenshot

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-2025-59050?

greenshot: upgrade to 1.3.301. Exact commands for each OS are on this page.

Is CVE-2025-59050 being exploited?

CVE-2025-59050 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-2025-59050 affect?

CVE-2025-59050 affects greenshot. Severity is high (CVSS 8.4). Greenshot is an open source Windows screenshot utility. Greenshot 1.3.300 and earlier deserializes attacker-controlled data received in a WM_COPYDATA message using BinaryFormatter.Deserialize without prior validation or authentication, allo

How urgent is CVE-2025-59050?

Priority 40/100. High severity; Public exploit reference

Software pages

Windows vulnerabilities

Related CVEs

CVE-2026-25792 MEDIUM 6.5 UPGRADE Greenshot is an open source Windows screenshot utility
CVE-2026-22035 HIGH 7.7 UPGRADE Greenshot is an open source Windows screenshot utility

References

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