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Vulnerability details: VCID-t3p3-qn46-6qfw
Vulnerability ID VCID-t3p3-qn46-6qfw
Aliases CVE-2025-26695
Summary When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-203 Observable Discrepancy
System Score Found at
cvssv3 4.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-26695.json
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00025 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-26695
cvssv3.1 5.3 https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
cvssv3.1 3.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-17
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2025-18
cvssv3.1 5.3 https://www.mozilla.org/security/advisories/mfsa2025-17/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-17/
cvssv3.1 5.3 https://www.mozilla.org/security/advisories/mfsa2025-18/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-18/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-26695.json
https://api.first.org/data/v1/epss?cve=CVE-2025-26695
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-26695
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2351146 https://bugzilla.redhat.com/show_bug.cgi?id=2351146
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:*:*:*:*:*:*:*:*
CVE-2025-26695 https://nvd.nist.gov/vuln/detail/CVE-2025-26695
mfsa2025-17 https://www.mozilla.org/en-US/security/advisories/mfsa2025-17
mfsa2025-17 https://www.mozilla.org/security/advisories/mfsa2025-17/
mfsa2025-18 https://www.mozilla.org/en-US/security/advisories/mfsa2025-18
mfsa2025-18 https://www.mozilla.org/security/advisories/mfsa2025-18/
show_bug.cgi?id=1883039 https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
USN-7663-1 https://usn.ubuntu.com/7663-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-26695.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:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
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/2025-03-10T18:51:16Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N 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:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Found at https://www.mozilla.org/security/advisories/mfsa2025-17/
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/2025-03-10T18:51:16Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-17/
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Found at https://www.mozilla.org/security/advisories/mfsa2025-18/
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/2025-03-10T18:51:16Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-18/
Exploit Prediction Scoring System (EPSS)
Percentile 0.04194
EPSS Score 0.00023
Published At Aug. 6, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:25.224450+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2025/mfsa2025-18.yml 37.0.0