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Case File

CVE-2023-26432

MEDIUM · CVSS 4.3 EPSS 1.15% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-06-20 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-26432
Severity
MEDIUM
CVSS
4.3
EPSS
1.15%

Original Filing — NVD Description

When adding an external mail account, processing of SMTP "capabilities" responses are not limited to plausible sizes. Attacker with access to a rogue SMTP service could trigger requests that lead to excessive resource usage and eventually service unavailability. We now limit accepted SMTP server response to reasonable length/size. No publicly available exploits are known.