qemu-kvm: Setting VNC password to empty string silently disables all authentication
Published Jun 21, 2012
4.3
MEDIUMCVSS 2.0
EPSS 1.31%
Description
qemu-kvm before 0.11.0 disables VNC authentication when the password is cleared, which allows remote attackers to bypass authentication and establish VNC sessions.
Affected products
No data.
- ≤ 0.11.0
- 0.1.0
- 0.1.1
- 0.1.2
- 0.1.3
- 0.1.4
- 0.1.5
- 0.1.6
- 0.10.0
- 0.10.1
- 0.10.2
- 0.10.3
- 0.10.4
- 0.10.5
- 0.10.6
- 0.11.0
- 0.11.0
No data.
Red Hat Enterprise Linux 6
qemu-kvm-2:0.12.1.2-2.113.el6_0.8
Fixed · RHSA-2011:0345
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | qemu-kvm-2:0.12.1.2-2.113.el6_0.8 | Fixed | RHSA-2011:0345 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect versions of kvm package as shipped with Red Hat Enterprise Linux 5.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:A/AC:H/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.31% (0.01305) | 69.47th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.31% (0.01305) | 66.69th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.50% (0.00503) | 64.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.19% (0.01189) | 85.75th | v3 (v2023.03.01) |
| Apr 11, 2024 | 1.19% (0.01189) | 84.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.19% (0.01185) | 82.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.17% (0.02172) | 80.28th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://rhn.redhat.com/errata/RHSA-2011-0345.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/42830 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43272 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43733 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/44393 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://ubuntu.com/usn/usn-1063-1 vendor-advisoryx_refsource_UBUNTU
- http://www.openwall.com/lists/oss-security/2011/01/10/3 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/01/11/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/01/12/2 mailing-listx_refsource_MLIST
- http://www.osvdb.org/70992 vdb-entryx_refsource_OSVDB
- https://access.redhat.com/security/cve/CVE-2011-0011 Vendor Advisory
- https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/697197 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=668589 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65215 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-0011
- https://www.cve.org/CVERecord?id=CVE-2011-0011
Change history (0)
No recorded changes yet.