Buffer Over-read Affecting cyrusimap/cyrus-imapd package, versions [,3.12.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 Jul 2026
- disclosed16 Jul 2026
- creditUnknown
Introduced: 16 Jul 2026
CVE-2026-47088 (opens in a new tab)How to fix?
Upgrade cyrusimap/cyrus-imapd to version 3.12.3 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Over-read in the parsing of nested MIME comments. An attacker can access sensitive information from heap memory by sending a specially crafted email message containing an RFC 822 comment ending with a backslash, which causes the server to read beyond the intended message boundary and return unintended memory content to the user.