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CVE-2017-7396

25
FAUCET Score

CVE-2017-7396 describes a memory leak vulnerability in TigerVNC version 1.7.1, specifically within the CConnection::CConnection function, which can be triggered by an unauthenticated client. This vulnerability carries a CVSS v3 score of 7.5 (HIGH), indicating a high impact on availability due to the potential for denial of service, with low attack complexity and no user interaction required. While the vulnerability is publicly disclosed, there is no evidence of active exploitation, nor are there any known public exploit modules or significant community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
1.7.1CPE matchmatch criteria
cpe:2.3:a:tigervnc:tigervnc:1.7.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.03%
Probability of exploitation in next 30 days
EPSS Percentile
79.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0203 is in the 63rd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: fltk-0:1.3.4-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: tigervnc-0:1.8.0-1.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: tigervnc

Vendor Advisories (1)

redhatCVE-2017-7396Low

tigervnc: SecurityServer and ClientServer memory leaks

Mar 27, 2017

References

access.redhat.com / errata/RHSA-2017:2000
github.com / TigerVNC/tigervnc/pull/436
Issue TrackingPatchThird Party Advisory
github.com / TigerVNC/tigervnc/pull/436/commits/dccb5f7d776e93863ae10bbff56a45c523c6eeb0
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201801-13
securityfocus.com / bid/97305