MEDIUM
CVE-2020-8618
CWE-617Published: June 17, 2020· Updated: Jun 17, 2026
4.9
CVSS v3.1
Official Description
An attacker who is permitted to send zone data to a server via zone transfer can exploit this to intentionally trigger the assertion failure with a specially constructed zone, denying service to clients.
Technical Analysis
CVE-2020-8618 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
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/4399-1/
ADVISORYhttps://usn.ubuntu.com/4399-1/
All References (10)
→
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlMailing List · Third Party Advisory
→
https://kb.isc.org/docs/cve-2020-8618Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20200625-0003/Third Party Advisory
→
https://usn.ubuntu.com/4399-1/Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlMailing List · Third Party Advisory
→
https://kb.isc.org/docs/cve-2020-8618Vendor Advisory
→
https://security.netapp.com/advisory/ntap-20200625-0003/Third Party Advisory
→
https://usn.ubuntu.com/4399-1/Third Party Advisory
Quick Facts
CVE IDCVE-2020-8618
CVSS Score4.9 / 10
SeverityMEDIUM
WeaknessCWE-617
CISA KEVNo
Affected4 vendor(s)
PublishedJun 17, 2020
Related CVEs (CWE-617)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-8618 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. CVE data is provided under the NVD usage policy.