HIGH
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 Aug 25, 2016
7.5
HIGHCVSS 3.0
EPSS 1.87%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.87% 0.01871
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01871
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.87% (0.01871) | 78.59th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.87% (0.01871) | 76.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.37% (0.01374) | 78.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.24% (0.00236) | 62.58th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.24% (0.00236) | 61.86th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00236) | 59.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
Weaknesses (1)
References (3)
- http://www.kb.cert.org/vuls/id/735416 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.kb.cert.org/vuls/id/BLUU-A9WQVP x_refsource_CONFIRMThird Party AdvisoryUS Government Resource
- http://www.securityfocus.com/bid/92348 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://www.kb.cert.org/vuls/id/735416 | third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource | |
| http://www.kb.cert.org/vuls/id/BLUU-A9WQVP | x_refsource_CONFIRMThird Party AdvisoryUS Government Resource | |
| http://www.securityfocus.com/bid/92348 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner certcc
Published Aug 25, 2016
Updated Aug 6, 2024
Reserved Jun 16, 2016
Link CVE-2016-5673
CISA Vulnrichment
Updated n/a