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Vulnerability details: VCID-2a5d-8cac-mkft
Vulnerability ID VCID-2a5d-8cac-mkft
Aliases CVE-2023-29542
Summary A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code.*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-29542.json
epss 0.00107 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00107 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00107 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00107 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00107 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00107 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00126 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00126 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
epss 0.00134 https://api.first.org/data/v1/epss?cve=CVE-2023-29542
cvssv3.1 9.8 https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
cvssv3.1 9.8 https://bugzilla.mozilla.org/show_bug.cgi?id=1815062
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1815062
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-13
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-14
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-15
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2023-13/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-13/
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2023-14/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-14/
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2023-15/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-15/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-29542.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

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
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


Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-12-11T15:45:52Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1815062
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


Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-12-11T15:45:52Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1815062
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.mozilla.org/security/advisories/mfsa2023-13/
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


Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-12-11T15:45:52Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-13/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.mozilla.org/security/advisories/mfsa2023-14/
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


Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-12-11T15:45:52Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-14/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://www.mozilla.org/security/advisories/mfsa2023-15/
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


Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-12-11T15:45:52Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-15/
Exploit Prediction Scoring System (EPSS)
Percentile 0.29026
EPSS Score 0.00107
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:58.075634+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2023/mfsa2023-13.yml 38.0.0