Memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153
Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVE-2026-16360
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-16360
Firefox
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Thunderbird
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Mozilla",
"product": "Firefox",
"versions": [
{
"status": "unaffected",
"version": "115.38",
"versionType": "rpm",
"lessThanOrEqual": "115.*"
},
{
"status": "unaffected",
"version": "140.13",
"versionType": "rpm",
"lessThanOrEqual": "140.*"
},
{
"status": "unaffected",
"version": "153",
"versionType": "rpm",
"lessThanOrEqual": "*"
}
]
},
{
"vendor": "Mozilla",
"product": "Thunderbird",
"versions": [
{
"status": "unaffected",
"version": "140.13",
"versionType": "rpm",
"lessThanOrEqual": "140.*"
},
{
"status": "unaffected",
"version": "153",
"versionType": "rpm",
"lessThanOrEqual": "*"
}
]
}
]- Related CVEs
- CVE-2026-16360
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #49056 · Revision 1
- Added to Heist Feed
- Publisher date