CVE-2020-28022
CRITICALCVSS 9.8/10EPSS 2.96%
Last modified
CVE-2020-28022 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands.. EPSS estimates a 2.96% chance of exploitation in the next 30 days.
Description
Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | >= 4.00, < 4.94.2 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-28022?
Exim 4 before 4.94.2 has Improper Restriction of Write Operations within the Bounds of a Memory Buffer. This occurs when processing name=value pairs within MAIL FROM and RCPT TO commands.
How severe is CVE-2020-28022?
CVE-2020-28022 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.96% probability of exploitation in the next 30 days.
How do I fix CVE-2020-28022?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2020-28022?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST