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Vulnerability record · CVE-2020-13432 · published 8 June 2020

CVE-2020-13432: Rejetto http file server classic buffer overflow vulnerability

Rejetto · Http File Server

rejetto HFS (aka HTTP File Server) v2.3m Build #300, when virtual files or folders are used, allows remote attackers to trigger an invalid-pointer write access violation via concurrent HTTP requests with a long URI or long HTTP headers.

7.5 CVSS 3.1 High EPSS 31% · top 1.8% CWE-120 · Classic buffer overflow
7.5CVSS 3.1 base score, v2 5.0
31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 8 tagged exploit
17 Jun 2026Last modified by NVD

Description

rejetto HFS (aka HTTP File Server) v2.3m Build #300, when virtual files or folders are used, allows remote attackers to trigger an invalid-pointer write access violation via concurrent HTTP requests with a long URI or long HTTP headers.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://hyp3rlinx.altervista.org/advisories/HFS-HTTP-FILE-SERVER-v2.3-REMOTE-BUFFER-OVERFLOW-DoS.txt ExploitThird Party Advisory
http://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2020/Jun/13 ExploitMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/12
https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5de PatchThird Party Advisory
https://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html ExploitThird Party AdvisoryVDB Entry
https://www.rejetto.com/hfs/?f=wn Release NotesVendor Advisory
http://hyp3rlinx.altervista.org/advisories/HFS-HTTP-FILE-SERVER-v2.3-REMOTE-BUFFER-OVERFLOW-DoS.txt ExploitThird Party Advisory
http://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2020/Jun/13 ExploitMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/12
https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5de PatchThird Party Advisory
https://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html ExploitThird Party AdvisoryVDB Entry
https://www.rejetto.com/hfs/?f=wn Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-13432), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.