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Vulnerability details: VCID-f9gn-szwb-9yez
Vulnerability ID VCID-f9gn-szwb-9yez
Aliases CVE-2023-5721
Summary It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-356 Product UI does not Warn User of Unsafe Actions
CWE-1021 Improper Restriction of Rendered UI Layers or Frames
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-5721.json
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.0027 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2023-5721
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1830820
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ssvc Track https://lists.debian.org/debian-lts-announce/2023/10/msg00037.html
ssvc Track https://lists.debian.org/debian-lts-announce/2023/10/msg00042.html
cvssv3.1 4.3 https://nvd.nist.gov/vuln/detail/CVE-2023-5721
ssvc Track https://www.debian.org/security/2023/dsa-5535
ssvc Track https://www.debian.org/security/2023/dsa-5538
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-45
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-46
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-47
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-45/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-46/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-47/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-5721.json
https://api.first.org/data/v1/epss?cve=CVE-2023-5721
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5721
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5724
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5725
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5728
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5730
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5732
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2245896 https://bugzilla.redhat.com/show_bug.cgi?id=2245896
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:a:mozilla:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
CVE-2023-5721 https://nvd.nist.gov/vuln/detail/CVE-2023-5721
dsa-5535 https://www.debian.org/security/2023/dsa-5535
dsa-5538 https://www.debian.org/security/2023/dsa-5538
mfsa2023-45 https://www.mozilla.org/en-US/security/advisories/mfsa2023-45
mfsa2023-45 https://www.mozilla.org/security/advisories/mfsa2023-45/
mfsa2023-46 https://www.mozilla.org/en-US/security/advisories/mfsa2023-46
mfsa2023-46 https://www.mozilla.org/security/advisories/mfsa2023-46/
mfsa2023-47 https://www.mozilla.org/en-US/security/advisories/mfsa2023-47
mfsa2023-47 https://www.mozilla.org/security/advisories/mfsa2023-47/
msg00037.html https://lists.debian.org/debian-lts-announce/2023/10/msg00037.html
msg00042.html https://lists.debian.org/debian-lts-announce/2023/10/msg00042.html
RHSA-2023:6162 https://access.redhat.com/errata/RHSA-2023:6162
RHSA-2023:6185 https://access.redhat.com/errata/RHSA-2023:6185
RHSA-2023:6186 https://access.redhat.com/errata/RHSA-2023:6186
RHSA-2023:6187 https://access.redhat.com/errata/RHSA-2023:6187
RHSA-2023:6188 https://access.redhat.com/errata/RHSA-2023:6188
RHSA-2023:6189 https://access.redhat.com/errata/RHSA-2023:6189
RHSA-2023:6191 https://access.redhat.com/errata/RHSA-2023:6191
RHSA-2023:6194 https://access.redhat.com/errata/RHSA-2023:6194
RHSA-2023:6195 https://access.redhat.com/errata/RHSA-2023:6195
RHSA-2023:6196 https://access.redhat.com/errata/RHSA-2023:6196
RHSA-2023:6197 https://access.redhat.com/errata/RHSA-2023:6197
RHSA-2023:6198 https://access.redhat.com/errata/RHSA-2023:6198
RHSA-2023:6199 https://access.redhat.com/errata/RHSA-2023:6199
show_bug.cgi?id=1830820 https://bugzilla.mozilla.org/show_bug.cgi?id=1830820
USN-6456-1 https://usn.ubuntu.com/6456-1/
USN-6468-1 https://usn.ubuntu.com/6468-1/
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-2023-5721.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: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1830820
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://lists.debian.org/debian-lts-announce/2023/10/msg00037.html
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://lists.debian.org/debian-lts-announce/2023/10/msg00042.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-5721
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:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://www.debian.org/security/2023/dsa-5535
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://www.debian.org/security/2023/dsa-5538
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-45/
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-46/
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-09-11T18:57:20Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-47/
Exploit Prediction Scoring System (EPSS)
Percentile 0.50233
EPSS Score 0.0027
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:31.546620+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2023/mfsa2023-45.yml 37.0.0