LOW
CVE-2019-20382
CWE-401Published: March 5, 2020· Updated: Jun 17, 2026
3.5
CVSS v3.1
Official Description
QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.
Technical Analysis
CVE-2019-20382 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://usn.ubuntu.com/4372-1/
ADVISORYhttps://usn.ubuntu.com/4372-1/
All References (12)
→
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlBroken Link · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/03/05/1Mailing List · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlMailing List · Third Party Advisory
→
https://usn.ubuntu.com/4372-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4665Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlBroken Link · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/03/05/1Mailing List · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.htmlMailing List · Third Party Advisory
→
https://usn.ubuntu.com/4372-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4665Third Party Advisory
Quick Facts
CVE IDCVE-2019-20382
CVSS Score3.5 / 10
SeverityLOW
WeaknessCWE-401
CISA KEVNo
Affected4 vendor(s)
PublishedMar 5, 2020
Related CVEs (CWE-401)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-20382 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.