CVE-2020-28020
CRITICAL
9.8
CVSS Score
Published: May 6, 2021 at 04:10 AM UTC
Updated: June 17, 2026 at 03:10 AM UTC
1 product affected across 1 vendorExim
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Severity
CRITICAL9.8
Exploit prediction
EPSS 8%
Description
Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/07/25/1Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/08/03/1x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28020-HSIZE.txtCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-190
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