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Vulnerability record · CVE-2020-8284 · published 14 December 2020

CVE-2020-8284: Haxx curl information exposure vulnerability

Haxx · Curl

A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.

3.7 CVSS 3.1 Low EPSS 3.9% · top 10.1% CWE-200 · Information exposure
3.7CVSS 3.1 base score, v2 4.3
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
22Affected product versions listed by NVD
32References
17 Jun 2026Last modified by NVD

Description

A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to a given IP address and port, and this way potentially make curl extract information about services that are otherwise private and not disclosed, for example doing port scanning and service banner extractions.

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

Affected products

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

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf PatchThird Party Advisory
https://curl.se/docs/CVE-2020-8284.html Vendor Advisory
https://hackerone.com/reports/1040166 Permissions Required
https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75N Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2E Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202012-14 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0007/ Third Party Advisory
https://support.apple.com/kb/HT212325 Third Party Advisory
https://support.apple.com/kb/HT212326 Third Party Advisory
https://support.apple.com/kb/HT212327 Third Party Advisory
https://www.debian.org/security/2021/dsa-4881 Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf PatchThird Party Advisory
https://curl.se/docs/CVE-2020-8284.html Vendor Advisory
https://hackerone.com/reports/1040166 Permissions Required
https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75N Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2E Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202012-14 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0007/ Third Party Advisory
https://support.apple.com/kb/HT212325 Third Party Advisory
https://support.apple.com/kb/HT212326 Third Party Advisory
https://support.apple.com/kb/HT212327 Third Party Advisory
https://www.debian.org/security/2021/dsa-4881 Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory

Track CVE-2020-8284 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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

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Source: NIST National Vulnerability Database (record CVE-2020-8284), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.