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Libvnc Project · product

LibVNCServer

19 CVEs

Every dot is a CVE in what this vendor ships; the named ones are the most at risk.

Every one of the 19 is a mark on the map. Named now: 1 to 19, most at risk first.

  1. LibVNCServer httpd proxy NULL Pointer DereferenceCVE-2026-32854LibVNC · CVSS 6.3 · 5.5% likely

    CWE-476

  2. libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.CVE-2019-20839Libvnc Project · 3.6% likely

    CWE-120

  3. An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.CVE-2020-14397Libvnc Project · 3.4% likely

    CWE-476

  4. LibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.CVE-2018-20750Libvnc Project · 3.3% likely

    CWE-787

  5. LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.CVE-2018-20748Libvnc Project · 3.3% likely

    CWE-787

  6. LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.CVE-2018-20749Libvnc Project · 3.2% likely

    CWE-787

  7. An issue was discovered in LibVNCServer before 0.9.13. An improperly closed TCP connection causes an infinite loop in libvncclient/sockets.c.CVE-2020-14398Libvnc Project · 2.7% likely

    CWE-835

  8. An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.CVE-2019-20840Libvnc Project · 2.7% likely

    CWE-787

  9. An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.CVE-2020-14396Libvnc Project · 2.6% likely

    CWE-476

  10. libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may over…CVE-2019-20788Libvnc Project · 2.5% likely

    CWE-190

  11. An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function.CVE-2018-21247Libvnc Project · 2.4% likely

    CWE-909

  12. An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.CVE-2020-14405Libvnc Project · 1.9% likely

    CWE-770

  13. An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.CVE-2020-14402Libvnc Project · 1.9% likely

    CWE-787

  14. An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings.CVE-2020-14403Libvnc Project · 1.6% likely

    CWE-787

  15. An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rre.c allows out-of-bounds access via encodings.CVE-2020-14404Libvnc Project · 1.6% likely

    CWE-787

  16. LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shap…CVE-2019-15690LibVNC · CVSS 8.8 · 0.8% likely

    CWE-122

  17. LibVNCServer UltraZip Encoding Heap Out-of-bounds ReadCVE-2026-32853LibVNC · CVSS 6.9 · 0.5% likely

    CWE-125

  18. libvncclient Tight decoder has an attacker-controlled heap out-of-bounds writeCVE-2026-50538LibVNC · CVSS 8.8 · 0.4% likely

    CWE-122

  19. LibVNCClient Tight Gradient decoding allows malicious server-triggered heap/stack OOB writesCVE-2026-44988LibVNC · CVSS 8.8 · 0.2% likely

    CWE-787

exploited in the wildcheck availableringed, named or not: CyberSIXT has reported on it

Zoom in on the map and the dots under the middle of it are named where they are.

Data as of 2026-11-15. CVE List through 2026-11-15 · EPSS of 2026-11-15 · CISA KEV checked 2026-11-15. Sources: the CVE List, CISA KEV, EPSS, NVD, nuclei templates and public bug bounty data.