CVE-2021-23991
CVE-2021-23991
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 1.0%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
24 Jun 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1.
Affected products
Mozilla · ThunderbirdWant to know if your infrastructure is exposed to this?
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