CVE-2018-20750

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.securityfocus.com/bid/106825Broken Link
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatch, Third Party Advisory
https://github.com/LibVNC/libvncserver/commit/09e8fc02f59f16e2583b34fe1a270c238bd9ffecPatch, Third Party Advisory
https://github.com/LibVNC/libvncserver/issues/273Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00029.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3877-1/Third Party Advisory
https://usn.ubuntu.com/4547-1/Third Party Advisory
https://usn.ubuntu.com/4587-1/Third Party Advisory
https://www.openwall.com/lists/oss-security/2018/12/10/8Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/106825Broken Link
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatch, Third Party Advisory
https://github.com/LibVNC/libvncserver/commit/09e8fc02f59f16e2583b34fe1a270c238bd9ffecPatch, Third Party Advisory
https://github.com/LibVNC/libvncserver/issues/273Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00029.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3877-1/Third Party Advisory
https://usn.ubuntu.com/4547-1/Third Party Advisory
https://usn.ubuntu.com/4587-1/Third Party Advisory
https://www.openwall.com/lists/oss-security/2018/12/10/8Exploit, Mailing List, Third Party Advisory

Timeline

Published: Jan 30, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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