Auth bypass in Vnc Realvnc
CVE-2006-2369
RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.924 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.924 · newest: 0.924 · change: 0.000
Affected products
- Vnc Realvnc — versions 4.1.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- securityreason.com/securityalert/8355 (third-party-advisory)
- www.vupen.com/english/advisories/2006/2492 (vdb-entry, Vendor Advisory)
- secunia.com/advisories/20107 (Patch, Vendor Advisory, third-party-advisory)
- www.securityfocus.com/archive/1/438175/100/0/threaded (mailing-list)
- www.securityfocus.com/archive/1/434117/100/0/threaded (mailing-list)
- www.securityfocus.com/archive/1/434015/100/0/threaded (mailing-list)
- marc.info/ (mailing-list)
- www.realvnc.com/products/free/4.1/release-notes.html (Patch)
- www.kb.cert.org/vuls/id/117929 (US Government Resource, Patch, Third Party Advisory, third-party-advisory)
- www.securityfocus.com/archive/1/438368/100/0/threaded (mailing-list)
Frequently asked questions
- What is CVE-2006-2369?
- CVE-2006-2369 is a vulnerability in Vnc Realvnc, classified under Improper Authentication. Published 2006-05-15.
- Is CVE-2006-2369 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.