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Fencer Vulns
medium 6.5

CVE-2017-7395 json

In TigerVNC 1.7.1 (SMsgReader.cxx SMsgReader::readClientCutText), by causing an integer overflow, an authenticated client can crash the ser…

published 2017-04-01 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16420

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

In TigerVNC 1.7.1 (SMsgReader.cxx SMsgReader::readClientCutText), by causing an integer overflow, an authenticated client can crash the server.

Patch / fix

  • tigervnc Debian 14, Debian 13, Debian 12 1.7.0+dfsg-7

debian advisories DEBIAN-CVE-2017-7395

  • fltk RHEL 7 1.3.4-1.el7
  • tigervnc RHEL 7 1.8.0-1.el7
  • fltk-fluid RHEL 7 1.3.4-1.el7
  • tigervnc-icons RHEL 7 1.8.0-1.el7
  • tigervnc-server RHEL 7 1.8.0-1.el7
  • tigervnc-license RHEL 7 1.8.0-1.el7
  • tigervnc-server-applet RHEL 7 1.8.0-1.el7
  • tigervnc-server-module RHEL 7 1.8.0-1.el7

red hat advisories RHSA-2017:2000

  • tigervnc SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 1.4.3-24.1
  • tigervnc SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 1.6.0-18.11.1

suse advisories SUSE-SU-2017:1093-1SUSE-SU-2017:1094-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7395 updated cvss 6.5

tigervnc: Integer overflow in SMsgReader::readClientCutText

  • Red Hat Enterprise Linux 6 tigervnc, tigervnc-server, tigervnc-server-applet, tigervnc-server-module
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) fltk 1.3.4-1.el7, tigervnc 1.8.0-1.el7, tigervnc-icons 1.8.0-1.el7, tigervnc-server 1.8.0-1.el7, tigervnc-license 1.8.0-1.el7, tigervnc-server-minimal 1.8.0-1.el7 Red Hat Enterprise Linux Client Optional (v. 7) fltk-fluid 1.3.4-1.el7, tigervnc-server-applet 1.8.0-1.el7, tigervnc-server-module 1.8.0-1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) tigervnc 1.8.0-1.el7, tigervnc-license 1.8.0-1.el7, tigervnc-server-minimal 1.8.0-1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) fltk 1.3.4-1.el7, tigervnc 1.8.0-1.el7, fltk-fluid 1.3.4-1.el7, tigervnc-icons 1.8.0-1.el7, tigervnc-server 1.8.0-1.el7, tigervnc-server-applet 1.8.0-1.el7, +1 more Red Hat Enterprise Linux Server (v. 7) fltk 1.3.4-1.el7, tigervnc 1.8.0-1.el7, tigervnc-icons 1.8.0-1.el7, tigervnc-server 1.8.0-1.el7, tigervnc-license 1.8.0-1.el7, tigervnc-server-minimal 1.8.0-1.el7 Red Hat Enterprise Linux Server Optional (v. 7) fltk-fluid 1.3.4-1.el7, tigervnc-server-applet 1.8.0-1.el7, tigervnc-server-module 1.8.0-1.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) fltk 1.3.4-1.el7, tigervnc 1.8.0-1.el7, tigervnc-icons 1.8.0-1.el7, tigervnc-server 1.8.0-1.el7, tigervnc-license 1.8.0-1.el7, tigervnc-server-minimal 1.8.0-1.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) fltk-fluid 1.3.4-1.el7, tigervnc-server-applet 1.8.0-1.el7, tigervnc-server-module 1.8.0-1.el7
    fixed: vendor fix RHSA-2017:2000

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.43% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

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.