VulnerabilityModified
CVE-2023-27830
TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer.
CRITICAL 9.0EPSS 1.08%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
TightVNC before v2.8.75 allows attackers to escalate privileges on the host operating system via replacing legitimate files with crafted files when executing a file transfer. This is due to the fact that TightVNC runs in the backend as a high-privileges account.
- CVSS 3.1
- 9.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 1.08% probability · 63th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- tightvnc/tightvnc
- Source
- cve@mitre.org
References
- https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cceExploit, Third Party Advisory
- https://www.tightvnc.com/news.phpProduct, Release Notes
- https://www.tightvnc.com/whatsnew.phpProduct, Release Notes
- https://medium.com/nestedif/vulnerability-disclosure-privilege-escalation-tightvnc-8165208cceExploit, Third Party Advisory
- https://www.tightvnc.com/news.phpProduct, Release Notes
- https://www.tightvnc.com/whatsnew.phpProduct, Release Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.