Search for vulnerabilities
Vulnerability details: VCID-jzqw-c9tg-r3d3
Vulnerability ID VCID-jzqw-c9tg-r3d3
Aliases CVE-2021-29950
Summary Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure, the secret key may remain in memory in its unprotected state.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-522 Insufficiently Protected Credentials
CWE-312 Cleartext Storage of Sensitive Information
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29950.json
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
epss 0.00131 https://api.first.org/data/v1/epss?cve=CVE-2021-29950
cvssv3.1 6.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-29950
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-29950
archlinux Medium https://security.archlinux.org/AVG-1845
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2021-17
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29950.json
https://api.first.org/data/v1/epss?cve=CVE-2021-29950
https://bugzilla.mozilla.org/show_bug.cgi?id=1673239
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23981
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23982
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23984
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23987
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29950
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4127
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2021-17/
1951873 https://bugzilla.redhat.com/show_bug.cgi?id=1951873
AVG-1845 https://security.archlinux.org/AVG-1845
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-2021-29950 https://nvd.nist.gov/vuln/detail/CVE-2021-29950
mfsa2021-17 https://www.mozilla.org/en-US/security/advisories/mfsa2021-17
RHSA-2021:1190 https://access.redhat.com/errata/RHSA-2021:1190
RHSA-2021:1192 https://access.redhat.com/errata/RHSA-2021:1192
RHSA-2021:1193 https://access.redhat.com/errata/RHSA-2021:1193
RHSA-2021:1201 https://access.redhat.com/errata/RHSA-2021:1201
USN-4936-1 https://usn.ubuntu.com/4936-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-29950.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:C/C:L/I:L/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: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-29950
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-29950
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 0.33503
EPSS Score 0.00131
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:48.036046+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2021/mfsa2021-17.yml 37.0.0