tigervnc: ZRLE decoding heap-based buffer overflow in vncviewer
Published Jan 2, 2020
9.8
CRITICALCVSS 3.1
EPSS 2.49%
Description
Multiple heap-based buffer overflows in the ZRLE_DECODE function in common/rfb/zrleDecode.h in TigerVNC before 1.3.1, when NDEBUG is enabled, allow remote VNC servers to cause a denial of service (vncviewer crash) and possibly execute arbitrary code via vectors related to screen image rendering.
Affected products
-
- Version before 1.3.1StatusaffectedConstraints-
- Version
No data.
Red Hat Enterprise Linux 5
vnc
Not affected
Red Hat Enterprise Linux 6
tigervnc
Not affected
Red Hat Enterprise Linux 7
tigervnc
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | vnc | Not affected | n/a |
| Red Hat Enterprise Linux 6 | tigervnc | Not affected | n/a |
| Red Hat Enterprise Linux 7 | tigervnc | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the tigervnc packages as shipped with Red Hat Enterprise Linux 6, and the vnc packages as shipped with Red Hat Enterprise Linux 5.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.49% (0.02494) | 84.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.49% (0.02494) | 82.54th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.68% (0.00681) | 69.90th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00257) | 65.99th | v3 (v2023.03.01) |
| Feb 11, 2024 | 0.26% (0.00257) | 64.53th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.27% (0.00270) | 66.91th | v3 (v2023.03.01) |
| May 8, 2023 | 0.27% (0.00270) | 62.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.39% (0.00386) | 68.94th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.44% (0.01440) | 73.47th | v2 (v2022.01.01) |
| Feb 28, 2023 | 1.44% (0.01440) | 73.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.44% (0.01440) | 71.44th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.44% (0.01440) | 50.53th | v2 (v2022.01.01) |
References (5)
- https://access.redhat.com/security/cve/CVE-2014-0011 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1050928 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.3.1 x_refsource_CONFIRMThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-0011
- https://www.cve.org/CVERecord?id=CVE-2014-0011
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2014-0011 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1050928 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/TigerVNC/tigervnc/releases/tag/v1.3.1 | x_refsource_CONFIRMThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-0011 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-0011 |
Change history (0)
No recorded changes yet.