postfix has 2 CVEs on record between 2023 and 2026. The median CVSS is 4.5 (medium).
CVEs per month
Last 12 months, by publish date
1125/111225/120126/010226/020326/030426/040526/050626/060726/070826/080926/091026/10
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 4.5
- Publish → KEV
- —
- Last 90 days
- 0 prev 1
2
Total CVEs
0
Critical
0
CISA KEV
0
Exploited
Worst active — by depth score
CVE-2023-51764Medium· 5.3Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions)42CVE-2026-43964Low· 3.7Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.20
postfix vulnerabilities
CVEs affecting postfix, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
CVE-2026-43964Low· 3.7Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.
Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.
▾ Sunlitpostfix · postfixEPSS 0.51%via NVD
CVE-2023-51764Medium· 5.3PoCPostfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions)
Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can u…
▾ Twilightpostfix · postfixEPSS 2.6%via NVD