Vulnerability in Ultravnc Repeater
CVE-2016-5673
UltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which allows remote attackers to obtain open-proxy functionality by using a :: substring in between the IP address and port number.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.019 (78.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.kb.cert.org/vuls/id/BLUU-A9WQVP (US Government Resource, Third Party Advisory)
- www.kb.cert.org/vuls/id/735416 (US Government Resource, Third Party Advisory, third-party-advisory)
- www.securityfocus.com/bid/92348 (vdb-entry)
Frequently asked questions
- What is CVE-2016-5673?
- CVE-2016-5673 is a high-severity vulnerability in Ultravnc Repeater, classified under Improper Access Control. CVSS score: 7.5/10. Published 2016-08-25.
- How severe is CVE-2016-5673?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-5673 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.