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CVE-2019-15679

34
FAUCET Score

CVE-2019-15679 is a critical heap buffer overflow vulnerability in TightVNC code version 1.3.10, specifically within the InitialiseRFBConnection function. This flaw allows for potential remote code execution and affects TightVNC products. With a CVSS score of 9.8 (CRITICAL), it is easily exploitable over the network without user interaction, leading to high impacts on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.10CPE matchmatch criteria
cpe:2.3:a:tightvnc:tightvnc:1.3.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
12.80%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.1280 is in the 92nd percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-478893.pdf
lists.debian.org / debian-lts-announce/2019/12/msg00028.html
us-cert.cisa.gov / ics/advisories/icsa-20-343-08
openwall.com / lists/oss-security/2018/12/10/5
Mailing ListThird Party Advisory