CVE-2020-28337
A directory traversal issue in the Utils/Unzip module in Microweber through 1.1.20 allows an authenticated attacker to gain remote code execution via the backup restore feature.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 16.6%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
A directory traversal issue in the Utils/Unzip module in Microweber through 1.1.20 allows an authenticated attacker to gain remote code execution via the backup restore feature. To exploit the vulnerability, an attacker must have the credentials of an administrative user, upload a maliciously constructed ZIP file with file paths including relative paths (i.e., ../../), move this file into the backup directory, and execute a restore on this file.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 16.61% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · first 10 May 2021
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- microweber/microweber
- Source
- cve@mitre.org
EPSS 16.6% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/162514/Microweber-CMS-1.1.20-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/microweber/microweber/commit/777ee9c3e7519eb3672c79ac41066175b2001b50Patch, Third Party Advisory
- https://sl1nki.page/advisories/CVE-2020-28337Third Party Advisory
- https://sl1nki.page/blog/2021/02/01/microweber-zip-slipExploit, Patch, Third Party Advisory
- http://packetstormsecurity.com/files/162514/Microweber-CMS-1.1.20-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/microweber/microweber/commit/777ee9c3e7519eb3672c79ac41066175b2001b50Patch, Third Party Advisory
- https://sl1nki.page/advisories/CVE-2020-28337Third Party Advisory
- https://sl1nki.page/blog/2021/02/01/microweber-zip-slipExploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.