Greenshot 1.2.10 and below allows arbitrary code execution because .NET content is…
Priority MEDIUM 46Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Greenshot 1.2.10 and below allows arbitrary code execution because .NET content is insecurely deserialized when a .greenshot file is opened.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.07551 94th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-34634
- 2026-10-03 Alias added: GHSA-8743-hwvq-mj5j
References
Exploit 2
More Greenshot vulnerabilities
- TI-2025-36692 Greenshot — Insecure .NET deserialization via WM_COPYDATA enables local code execution CVSS 3.1HIGH 8.4
- TI-2026-17729 Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin CVSS 3.1HIGH 7.8
- TI-2026-20856 Greenshot Vulnerable to OS Command Injection via ExternalCommand Plugin CVSS 3.1MEDIUM 6.5
Sources
- CVE-2023-34634 · CVE Program
- CVE-2023-34634 · NVD
- FIRST EPSS
- GHSA-8743-hwvq-mj5j · GitHub Advisory Database · CC BY 4.0
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