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CVE-2026-22035

Getgreenshot Greenshot command injection

7.7 HIGHPublic exploitEPSS 1.03%
  1. Published8 Jan 2026

Description

Greenshot is an open source Windows screenshot utility. Versions 1.3.310 and below arvulnerable to OS Command Injection through unsanitized filename processing. The FormatArguments method in ExternalCommandDestination.cs:269 uses string.Format() to insert user-controlled filenames directly into shell commands without sanitization, allowing attackers to execute arbitrary commands by crafting malicious filenames containing shell metacharacters. This issue is fixed in version 1.3.311.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityHigh
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Getgreenshot Greenshot< 1.3.311

Remediation

Fixed in
Getgreenshot Greenshot≥ 1.3.311

References

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Frequently asked

Is CVE-2026-22035 being actively exploited?

CVE-2026-22035 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.03%.

How severe is CVE-2026-22035?

CVE-2026-22035 has a CVSS 3.1 base score of 7.7, rated high. EPSS estimates a 1.03% probability of exploitation.

Which products are affected by CVE-2026-22035?

Affected products include Getgreenshot Greenshot.

How do I fix CVE-2026-22035?

Upgrade affected software to a fixed version, for example Getgreenshot Greenshot 1.3.311 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-22035 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.