CVE-2020-5553
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
CVE-2020-5553 is a critical vulnerability (CVSS 9.8) in Keitai-site.net Mailform, published March 25, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.27%, the 83rd percentile. No source names a fixed version.
- Severity
- 9.8 CriticalCVSS 3.1, NVD
- Exploit chance
- 2.27%EPSS, 83rd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
What each source reports
NVD Score used
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
- Record
CVE-2020-5553- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE ListNo score
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
- Record
CVE-2020-5553- Updated
- 2026-11-02
EUVDEUVD-2020-26715No score
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
- Record
EUVD-2020-26715- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-48xv-vxf2-m8qmNo score
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
mailform version 1.04 allows remote attackers to execute arbitrary PHP code via unspecified vectors.
- Record
GHSA-48xv-vxf2-m8qm- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.