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Vulnerability details: VCID-e9tu-fr4k-kbfp
Vulnerability ID VCID-e9tu-fr4k-kbfp
Aliases CVE-2025-1012
Summary firefox: thunderbird: Use-after-free during concurrent delazification
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 7.6 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-1012.json
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00119 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
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epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00136 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
epss 0.0021 https://api.first.org/data/v1/epss?cve=CVE-2025-1012
cvssv3.1 9.8 https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2025-1012
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-07
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-08
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-09
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-10
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-11
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2025-07/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-07/
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2025-08/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-08/
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2025-09/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-09/
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2025-10/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-10/
cvssv3.1 9.8 https://www.mozilla.org/security/advisories/mfsa2025-11/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-11/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-1012.json
https://api.first.org/data/v1/epss?cve=CVE-2025-1012
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-1012
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2343765 https://bugzilla.redhat.com/show_bug.cgi?id=2343765
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:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
CVE-2025-1012 https://nvd.nist.gov/vuln/detail/CVE-2025-1012
mfsa2025-07 https://www.mozilla.org/en-US/security/advisories/mfsa2025-07
mfsa2025-07 https://www.mozilla.org/security/advisories/mfsa2025-07/
mfsa2025-08 https://www.mozilla.org/en-US/security/advisories/mfsa2025-08
mfsa2025-08 https://www.mozilla.org/security/advisories/mfsa2025-08/
mfsa2025-09 https://www.mozilla.org/en-US/security/advisories/mfsa2025-09
mfsa2025-09 https://www.mozilla.org/security/advisories/mfsa2025-09/
mfsa2025-10 https://www.mozilla.org/en-US/security/advisories/mfsa2025-10
mfsa2025-10 https://www.mozilla.org/security/advisories/mfsa2025-10/
mfsa2025-11 https://www.mozilla.org/en-US/security/advisories/mfsa2025-11
mfsa2025-11 https://www.mozilla.org/security/advisories/mfsa2025-11/
RHSA-2025:1066 https://access.redhat.com/errata/RHSA-2025:1066
RHSA-2025:1132 https://access.redhat.com/errata/RHSA-2025:1132
RHSA-2025:1133 https://access.redhat.com/errata/RHSA-2025:1133
RHSA-2025:1135 https://access.redhat.com/errata/RHSA-2025:1135
RHSA-2025:1136 https://access.redhat.com/errata/RHSA-2025:1136
RHSA-2025:1137 https://access.redhat.com/errata/RHSA-2025:1137
RHSA-2025:1138 https://access.redhat.com/errata/RHSA-2025:1138
RHSA-2025:1139 https://access.redhat.com/errata/RHSA-2025:1139
RHSA-2025:1140 https://access.redhat.com/errata/RHSA-2025:1140
RHSA-2025:1184 https://access.redhat.com/errata/RHSA-2025:1184
RHSA-2025:1283 https://access.redhat.com/errata/RHSA-2025:1283
RHSA-2025:1292 https://access.redhat.com/errata/RHSA-2025:1292
RHSA-2025:1317 https://access.redhat.com/errata/RHSA-2025:1317
RHSA-2025:1318 https://access.redhat.com/errata/RHSA-2025:1318
RHSA-2025:1319 https://access.redhat.com/errata/RHSA-2025:1319
RHSA-2025:1339 https://access.redhat.com/errata/RHSA-2025:1339
RHSA-2025:1340 https://access.redhat.com/errata/RHSA-2025:1340
RHSA-2025:1341 https://access.redhat.com/errata/RHSA-2025:1341
RHSA-2025:1348 https://access.redhat.com/errata/RHSA-2025:1348
show_bug.cgi?id=1939710 https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
USN-7263-1 https://usn.ubuntu.com/7263-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-1012.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=1939710
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/2025-02-05T16:01:27Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
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: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2025-1012
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://www.mozilla.org/security/advisories/mfsa2025-07/
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/2025-02-05T16:01:27Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-07/
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/mfsa2025-08/
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/2025-02-05T16:01:27Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-08/
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/mfsa2025-09/
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/2025-02-05T16:01:27Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-09/
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/mfsa2025-10/
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/2025-02-05T16:01:27Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-10/
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/mfsa2025-11/
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/2025-02-05T16:01:27Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-11/
Exploit Prediction Scoring System (EPSS)
Percentile 0.27731
EPSS Score 0.00119
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-03-28T05:42:40.898327+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-1012.json 36.0.0