Critical severity9.8OSV Advisory· Published Jan 30, 2019· Updated Jun 17, 2026
CVE-2018-20748
CVE-2018-20748
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
23LibVNCServer-0.9.10, LibVNCServer-0.9.11, LibVNCServer-0.9.8, …+ 1 more
- (no CPE)range: LibVNCServer-0.9.10, LibVNCServer-0.9.11, LibVNCServer-0.9.8, …
- (no CPE)range: < 0.9.12
- osv-coords21 versionspkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Leap%2015.0pkg:rpm/suse/LibVNCServer&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%207
< 0.9.10-lp150.3.6.1+ 20 more
- (no CPE)range: < 0.9.10-lp150.3.6.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.10-4.6.1
- (no CPE)range: < 0.9.1-160.9.1
- (no CPE)range: < 0.9.1-160.9.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.1-160.9.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.1-160.9.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.9-17.11.1
- (no CPE)range: < 0.9.10-4.6.1
- (no CPE)range: < 0.9.9-17.11.1
Patches
Vulnerability mechanics
References
12- cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfnvdPatchThird Party Advisory
- github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42baenvdPatchThird Party Advisory
- github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7nvdPatchThird Party Advisory
- github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2anvdPatchThird Party Advisory
- github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2cnvdPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2018/12/10/8nvdExploitMailing ListThird Party Advisory
- github.com/LibVNC/libvncserver/issues/273nvdIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/01/msg00029.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlnvdMailing ListThird Party Advisory
- usn.ubuntu.com/3877-1/nvdThird Party Advisory
- usn.ubuntu.com/4547-1/nvdThird Party Advisory
- usn.ubuntu.com/4587-1/nvdThird Party Advisory
News mentions
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