CVE-2020-13432

Name: CVE-2020-13432
Creator: NVD / NIST
Published: 2020-06-08T18:15:11.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 32.76%

Last modified Jun 17, 2026

CVE-2020-13432 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 32.76% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

32.76%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Rejetto	Http File Server	2.3m

References

http://hyp3rlinx.altervista.org/advisories/HFS-HTTP-FILE-SERVER-v2.3-REMOTE-BUFFER-OVERFLOW-DoS.txtExploit, Third Party Advisory
http://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Jun/13Exploit, Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/12
https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5dePatch, Third Party Advisory
https://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
https://www.rejetto.com/hfs/?f=wnRelease Notes, Vendor Advisory
http://hyp3rlinx.altervista.org/advisories/HFS-HTTP-FILE-SERVER-v2.3-REMOTE-BUFFER-OVERFLOW-DoS.txtExploit, Third Party Advisory
http://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Jun/13Exploit, Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/12
https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5dePatch, Third Party Advisory
https://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
https://www.rejetto.com/hfs/?f=wnRelease Notes, Vendor Advisory

Timeline

Published: Jun 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13432?

How severe is CVE-2020-13432?

CVE-2020-13432 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 32.76% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13432?

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.

Are you affected by CVE-2020-13432?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST