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CVE-2016-9893

Memory safety bugs were reported in Thunderbird 45.5. Some of these bugs showed evidence of memory corruption and we presume that with…

Critical9.8EPSS 2.6%
Published
Updated
Reserved
Assigned by
mozilla

Description

Memory safety bugs were reported in Thunderbird 45.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.

Scores

CVSS scores of CVE-2016-9893, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Critical9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
2.6% · top 15% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • Mozilla · Firefox

    • affected unspecified – < 50.1

  • Mozilla · Firefox ESR

    • affected unspecified – < 45.6

  • Mozilla · Thunderbird

    • affected unspecified – < 45.6

References (10)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .