CVE-2021-3657
- Source
- https://cve.org/CVERecord?id=CVE-2021-3657
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3657.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3657
- Downstream
- Related
- Published
- 2022-02-18T18:15:09.603Z
- Modified
- 2026-03-10T23:38:50.158343Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling of extremely large (>=2GiB) IMAP literals, malicious or compromised IMAP servers, and hypothetically even external email senders, could cause several different buffer overflows, which could conceivably be exploited for remote code execution.
- References
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3657.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "35"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "7.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
}
]