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CVE-2020-13432

33
FAUCET Score

CVE-2020-13432 affects rejetto HFS (HTTP File Server) v2.3m Build #300, allowing remote attackers to trigger an invalid-pointer write access violation. This occurs when virtual files or folders are in use and concurrent HTTP requests with long URIs or HTTP headers are made. Rated 7.5 HIGH on CVSS, this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, leading to high availability impact. There is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.3mCPE matchmatch criteria
cpe:2.3:a:rejetto:http_file_server:2.3m:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
30.86%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.3086 is in the 97th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

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