CRITICALVulnerability
CVE-2026-74988
Internally found bugs present in Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Properties
- severity
- CRITICAL
- score
- 9.8
- epss_score
- 0.0035
- cve_id
- CVE-2026-74988
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-08-18T13:17:40.687
- last_modified
- 2026-09-01T22:17:12.190
- epss_percentile
- 0.27906
Related Entities (7)
ENRICHED_BY (1)
→[Source]FIRST EPSS
AFFECTS_PRODUCT (4)
→[Product]
→[Product]
→[Product]
→[Product]
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Improper Restriction of Operations within the Bounds of a Memory Buffer
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