CVE-2017-5884
gtk-vnc before 0.7.0 does not properly check boundaries of subrectangle-containing tiles, which allows remote servers to execute arbitrary code via the src x, y coordinates in a crafted (1) rre, (2) hextile, or (3) copyrect tile.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
gtk-vnc before 0.7.0 does not properly check boundaries of subrectangle-containing tiles, which allows remote servers to execute arbitrary code via the src x, y coordinates in a crafted (1) rre, (2) hextile, or (3) copyrect tile.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.32% probability · 83th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-118
- Affected
- fedoraproject/fedora · gnome/gtk-vnc
- Source
- secalert@redhat.com
EPSS moved from 3.5% on 21 September 2026 to 2.3% on 27 October 2026.
References
- http://www.openwall.com/lists/oss-security/2017/02/03/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/02/05/5Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/96016Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2258
- https://bugzilla.gnome.org/show_bug.cgi?id=778048Exploit, Issue Tracking
- https://git.gnome.org/browse/gtk-vnc/commit/?id=ea0386933214c9178aaea9f2f85049ea3fa3e14aPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LGPQ5MQR6SN4DYTEFACHP2PP5RR26KYK/
- http://www.openwall.com/lists/oss-security/2017/02/03/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/02/05/5Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/96016Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2258
- https://bugzilla.gnome.org/show_bug.cgi?id=778048Exploit, Issue Tracking
- https://git.gnome.org/browse/gtk-vnc/commit/?id=ea0386933214c9178aaea9f2f85049ea3fa3e14aPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LGPQ5MQR6SN4DYTEFACHP2PP5RR26KYK/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.