CVE-2014-8240

Tigervnc vulnerability

CVSS

7.5

EPSS

3.5%

EPSS pct

88th

Exploited

No known

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.

Affected vendor

Tigervnc

Affected product

Tigervnc

CVSS vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Weakness type (CWE)

CWE-119 — Improper Restriction of Operations within Memory Bounds

Published

2014-10-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2014-8240

Confirm whether Tigervnc Tigervnc is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2014-8240.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-8240

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-8240 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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