CVE-2019-11704
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 10.5%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 10.53% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · first 17 June 2019
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- mozilla/thunderbird
- Source
- security@mozilla.org
EPSS 10.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1553814Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201908-20Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-17/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1553814Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201908-20Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-17/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.