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Vulnerability details: VCID-wk26-kc1d-9qcy
Vulnerability ID VCID-wk26-kc1d-9qcy
Aliases CVE-2020-15657
Summary Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-426 Untrusted Search Path
System Score Found at
cvssv3 7.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-15657.json
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
epss 0.00199 https://api.first.org/data/v1/epss?cve=CVE-2020-15657
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-30
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-32
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2020-33
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-15657.json
https://api.first.org/data/v1/epss?cve=CVE-2020-15657
1861648 https://bugzilla.redhat.com/show_bug.cgi?id=1861648
mfsa2020-30 https://www.mozilla.org/en-US/security/advisories/mfsa2020-30
mfsa2020-32 https://www.mozilla.org/en-US/security/advisories/mfsa2020-32
mfsa2020-33 https://www.mozilla.org/en-US/security/advisories/mfsa2020-33
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-15657.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.41965
EPSS Score 0.00199
Published At April 21, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:17:05.768535+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2020/mfsa2020-33.yml 38.0.0