CVE-2019-11703 EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 10.5% (pctl 96)
Patch early
A public exploit exists.
Description
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 10.53% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2019-07-23 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| mozilla | thunderbird |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Thunderbird ESR < 60.7.XXX - 'parser_get_next_char' Heap-Based Buffer Overflow | 2019-06-17 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1553820
- https://security.gentoo.org/glsa/201908-20
- https://www.mozilla.org/security/advisories/mfsa2019-17/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1553820
- https://security.gentoo.org/glsa/201908-20
- https://www.mozilla.org/security/advisories/mfsa2019-17/
→ the Explorer · watch your stack · NVD