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Vulnerability details: VCID-3f36-r4k1-d7ad
Vulnerability ID VCID-3f36-r4k1-d7ad
Aliases CVE-2023-6865
Summary EncryptingOutputStream was susceptible to exposing uninitialized data. This issue could only be abused in order to write data to a local disk which may have implications for private browsing mode.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-908 Use of Uninitialized Resource
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-6865.json
epss 0.00299 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
epss 0.00348 https://api.first.org/data/v1/epss?cve=CVE-2023-6865
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2023-6865
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-54
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-56
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-6865.json
https://api.first.org/data/v1/epss?cve=CVE-2023-6865
https://bugzilla.mozilla.org/show_bug.cgi?id=1864123
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6856
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6857
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6858
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6859
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6860
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6861
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6862
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6863
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6864
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6865
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6867
https://security.gentoo.org/glsa/202401-10
2255361 https://bugzilla.redhat.com/show_bug.cgi?id=2255361
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
CVE-2023-6865 https://nvd.nist.gov/vuln/detail/CVE-2023-6865
mfsa2023-54 https://www.mozilla.org/en-US/security/advisories/mfsa2023-54
mfsa2023-56 https://www.mozilla.org/en-US/security/advisories/mfsa2023-56
RHSA-2024:0011 https://access.redhat.com/errata/RHSA-2024:0011
RHSA-2024:0012 https://access.redhat.com/errata/RHSA-2024:0012
RHSA-2024:0019 https://access.redhat.com/errata/RHSA-2024:0019
RHSA-2024:0021 https://access.redhat.com/errata/RHSA-2024:0021
RHSA-2024:0022 https://access.redhat.com/errata/RHSA-2024:0022
RHSA-2024:0023 https://access.redhat.com/errata/RHSA-2024:0023
RHSA-2024:0024 https://access.redhat.com/errata/RHSA-2024:0024
RHSA-2024:0025 https://access.redhat.com/errata/RHSA-2024:0025
RHSA-2024:0026 https://access.redhat.com/errata/RHSA-2024:0026
USN-6562-1 https://usn.ubuntu.com/6562-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-6865.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:R/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-6865
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 0.52781
EPSS Score 0.00299
Published At Aug. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:32.617481+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2023/mfsa2023-54.yml 37.0.0