MEDIUM
CVE-2020-12272
CWE-290Published: April 27, 2020· Updated: Jun 17, 2026
5.3
CVSS v3.1
Official Description
OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.
Technical Analysis
CVE-2020-12272 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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
All References (10)
→
https://sourceforge.net/p/opendmarc/tickets/237/Exploit · Third Party Advisory
→
https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdfTechnical Description · Third Party Advisory
→
https://sourceforge.net/p/opendmarc/tickets/237/Exploit · Third Party Advisory
→
https://www.usenix.org/system/files/sec20fall_chen-jianjun_prepub_0.pdfTechnical Description · Third Party Advisory
Quick Facts
CVE IDCVE-2020-12272
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-290
CISA KEVNo
Affected2 vendor(s)
PublishedApr 27, 2020
Related CVEs (CWE-290)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-12272 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.