CVE-2017-5581
Buffer overflow in the ModifiablePixelBuffer::fillRect function in TigerVNC before 1.7.1 allows remote servers to execute arbitrary code via an RRE message with subrectangle outside framebuffer boundaries.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Buffer overflow in the ModifiablePixelBuffer::fillRect function in TigerVNC before 1.7.1 allows remote servers to execute arbitrary code via an RRE message with subrectangle outside framebuffer boundaries.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.25% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- tigervnc/tigervnc
- Source
- cve@mitre.org
EPSS 4.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://rhn.redhat.com/errata/RHSA-2017-0630.html
- http://www.openwall.com/lists/oss-security/2017/01/22/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/25/6Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/95789Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2000
- https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720baPatch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/pull/399Patch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/201702-19
- http://rhn.redhat.com/errata/RHSA-2017-0630.html
- http://www.openwall.com/lists/oss-security/2017/01/22/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/25/6Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/95789Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2000
- https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720baPatch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/pull/399Patch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/201702-19
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.