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CVE-2014-8240

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and...

7.5 HighFix available

CVE-2014-8240 is a high vulnerability (CVSS 7.5) in Tigervnc, published October 16, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.55%, the 89th percentile. Fixed in tigervnc 1.7.0-1.

What does this mean?
Severity
7.5 HighCVSS 2.0, NVD
Exploit chance
3.55%EPSS, 89th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
1.7.0-1tigervnc +36 more

Description

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Exploit likelihood

3.55%Up 0.3 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tigervnc
Debian:12
before 1.7.0-1
1.7.0-1
tigervnc
Debian:13
before 1.7.0-1
1.7.0-1
tigervnc
Debian:14
before 1.7.0-1
1.7.0-1
tigervnc
Mageia:5
From an advisory covering 2 CVEs
before 1.3.1-6.1.mga5
1.3.1-6.1.mga5
tigervnc-debuginfo
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-applet
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-module
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-icons
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-license
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
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Affected packages
PackageAffectedFixed
tigervnc-server
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-minimal
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-debuginfo
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-icons
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-applet
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-module
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-license
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-minimal
Red Hat:enterprise_linux:7::computenode
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-debuginfo
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-applet
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-module
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-icons
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-license
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-minimal
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-debuginfo
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-applet
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-module
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-icons
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-license
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc-server-minimal
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
before 0:1.3.1-3.el7
0:1.3.1-3.el7
tigervnc
openSUSE:Tumbleweed
From an advisory covering 3 CVEs
before 1.7.0-2.1
1.7.0-2.1

What each source reports

NVD Score used7.5

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Record
CVE-2014-8240
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-119
Updated
2026-11-02
CVE ListNo score

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Record
CVE-2014-8240
Updated
2026-11-02
EUVDEUVD-2014-8081No score

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Record
EUVD-2014-8081
Updated
2026-11-03
GitHub AdvisoriesGHSA-5qgx-8v4m-83gfNo score

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and...

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Record
GHSA-5qgx-8v4m-83gf
Weakness
CWE-119
Updated
2026-11-02
OSVNo score

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Record
CVE-2014-8240
Updated
2026-11-02
OSVDEBIAN-CVE-2014-8240No score

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

Record
DEBIAN-CVE-2014-8240
Updated
2026-11-02
OSVMGASA-2015-0459No score

Updated tigervnc packages fix security vulnerabilities

Updated tigervnc packages fix security vulnerabilities:

An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client (CVE-2014-8240).

A NULL pointer dereference flaw was found in TigerVNC's XRegion. A malicious VNC server could use this flaw to cause a client to crash (CVE-2014-8241).

Record
MGASA-2015-0459
Updated
2026-11-02
OSVopenSUSE-SU-2024:10056-1No score

libXvnc-devel-1.7.0-2.1 on GA media

These are all security issues fixed in the libXvnc-devel-1.7.0-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10056-1
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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