CVE-2023-34634 json
Greenshot 1.2.10 and below allows arbitrary code execution because .NET content is insecurely deserialized when a .greenshot file is opened.
published 2023-08-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-38678
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.6%
- EPSS 7.6% chance of exploitation in 30 days, percentile 94%
- public exploits
- 2
- Metasploit, Exploit-DB
Summary
Greenshot 1.2.10 and below allows arbitrary code execution because .NET content is insecurely deserialized when a .greenshot file is opened.
Patch / fix
Timeline
- First public exploit (Metasploit exploit/windows/fileformat/greenshot_deserialize_cve_2023_34634)
- Published
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
7.55% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/windows/fileformat/greenshot_deserialize_cve_2023_34634 Greenshot .NET Deserialization Fileformat Exploit metasploit exploit, excellent rank, 2023-07-26
- EDB-51633 GreenShot 1.2.10 - Insecure Deserialization Arbitrary Code Execution local, 2023-07-28
- packetstormsecurity.com http://packetstormsecurity.com/files/173825/GreenShot-1.2.10-Arbitrary-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
-
github.com
/greenshot/greenshot/commit/a152e2883fca7f78051b3bd6b1e5cc57355cb44c
patch, third-party-advisory
-
exploit-db.com
/exploits/51633
exploit, third-party-advisory, vdb-entry
-
packetstormsecurity.com
/files/173825/GreenShot-1.2.10-Arbitrary-Code-Execution.html
exploit, permissions-required, third-party-advisory, vdb-entry
-
greenshot.atlassian.net
/browse/BUG-3061
issue-tracking, third-party-advisory
-
packetstormsecurity.com
/files/174222/Greenshot-1.3.274-Deserialization-Command-Execution.html
permissions-required
Sources
- CVE List CVE-2023-34634
- NVD CVE-2023-34634
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.