Stack-based buffer overflow in Kaspersky TigerVNC
Priority LOW 39CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 9 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-121 and the CVSS impact.
Summary
TigerVNC version prior to 1.10.1 is vulnerable to stack buffer overflow, which could be triggered from CMsgReader::readSetCursor. This vulnerability occurs due to insufficient sanitization of PixelFormat. Since remote attacker can choose offset from start of the buffer to start writing his values, exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
Why it matters now
EPSS 0.04485 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 9 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Kaspersky | TigerVNC | 1.10.0 | — | No fix listed | CNA |
- TigerVNC VendorKaspersky Affected 1.10.0 Fixed in — No fix listed CNA
Remediation
Red Hat 2 advisories
- RHSA-2020:3875 Released 2020-09-29 · Red Hat rating Moderatetigervnc security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) tigervnc-1.8.0-21.el7, tigervnc-icons-1.8.0-21.el7, tigervnc-license-1.8.0-21.el7 +2
- Red Hat Enterprise Linux Client Optional (v. 7) tigervnc-server-applet-1.8.0-21.el7, tigervnc-server-module-1.8.0-21.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) tigervnc-1.8.0-21.el7, tigervnc-license-1.8.0-21.el7, tigervnc-server-minimal-1.8.0-21.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) tigervnc-1.8.0-21.el7, tigervnc-icons-1.8.0-21.el7, tigervnc-server-1.8.0-21.el7 +2
- Red Hat Enterprise Linux Server (v. 7) tigervnc-1.8.0-21.el7, tigervnc-icons-1.8.0-21.el7, tigervnc-license-1.8.0-21.el7 +2
- Red Hat Enterprise Linux Server Optional (v. 7) tigervnc-server-applet-1.8.0-21.el7, tigervnc-server-module-1.8.0-21.el7
- Red Hat Enterprise Linux Workstation (v. 7) tigervnc-1.8.0-21.el7, tigervnc-icons-1.8.0-21.el7, tigervnc-license-1.8.0-21.el7 +2
- Red Hat Enterprise Linux Workstation Optional (v. 7) tigervnc-server-applet-1.8.0-21.el7, tigervnc-server-module-1.8.0-21.el7
- RHSA-2020:1497 Released 2020-04-16 · Red Hat rating Moderatetigervnc security update
- Red Hat Enterprise Linux AppStream (v. 8) tigervnc-1.9.0-14.el8_1, tigervnc-icons-1.9.0-14.el8_1, tigervnc-license-1.9.0-14.el8_1 +4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Kaspersky TigerVNC — openSUSE-SU-2020:0087
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2019-11778 Heap-based buffer overflow in Kaspersky TigerVNCPriority LOW 39
- TI-2019-11777 Heap-based buffer overflow in Kaspersky TigerVNCPriority LOW 39
- TI-2019-11776 Heap-based buffer overflow in Kaspersky TigerVNCPriority LOW 39
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:1497 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2020:3875 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2020:3875 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-15695
- 2026-10-03 Alias added: GHSA-25ff-c5j2-v9ch
References
More Kaspersky vulnerabilities
- TI-2012-01284 The ZIP file parser in AhnLab V3 Internet Security 2011.01.18.00, AVG Anti-Virus… CVSS 2.0MEDIUM 4.3
- TI-2012-01283 The Gzip file parser in AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Command Antivirus… CVSS 2.0MEDIUM 4.3
- TI-2012-01281 The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir… CVSS 2.0MEDIUM 4.3
- TI-2012-01279 The TAR file parser in Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast!… CVSS 2.0MEDIUM 4.3
- TI-2012-01278 The TAR file parser in AVG Anti-Virus 10.0.0.1190, Quick Heal (aka Cat QuickHeal) 11.00… CVSS 2.0MEDIUM 4.3
- TI-2012-01275 The CAB file parser in Dr.Web 5.0.2.03300, Trend Micro HouseCall 9.120.0.1004, Kaspersky… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2019-15695 · CVE Program
- CVE-2019-15695 · NVD
- FIRST EPSS
- GHSA-25ff-c5j2-v9ch · GitHub Advisory Database · CC BY 4.0
- CVE-2019-15695 · Red Hat security data · CC BY 4.0
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