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Vulnerability record · CVE-2020-37182 · published 11 February 2026

CVE-2020-37182: Stack-based buffer overflow vulnerability

Redir 3.3 contains a stack overflow vulnerability in the doproxyconnect() function that allows attackers to crash the application by sending oversized input. Attackers can exploit the sprintf() buffer without proper length checking to overwrite memory and cause a segmentation fault, resulting in program termination.

8.7 CVSS 4.0 High EPSS 0.50% · top 60.0% CWE-121 · Stack-based buffer overflow Deferred
8.7CVSS 4.0 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Redir 3.3 contains a stack overflow vulnerability in the doproxyconnect() function that allows attackers to crash the application by sending oversized input. Attackers can exploit the sprintf() buffer without proper length checking to overwrite memory and cause a segmentation fault, resulting in program termination.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/troglobit/redir
https://www.exploit-db.com/exploits/47919
https://www.vulncheck.com/advisories/redir-denial-of-service

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Source: NIST National Vulnerability Database (record CVE-2020-37182), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.