High severity8.8NVD Advisory· Published Dec 9, 2020· Updated Jun 17, 2026
CVE-2020-26970
CVE-2020-26970
Description
When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6< 78.5.1+ 2 more
- (no CPE)range: < 78.5.1
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <78.5.1
- (no CPE)range: <78.5.1
- osv-coords3 versionspkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed
< 78.6.0-8.3.1+ 2 more
- (no CPE)range: < 78.6.0-8.3.1
- (no CPE)range: < 78.5.1-3.110.2
- (no CPE)range: < 91.1.1-1.1
Patches
Vulnerability mechanics
References
2- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-53/nvdVendor Advisory
News mentions
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