CVE-2019-19906
CVSS v3
7.5
HIGH
EPSS Score
8.0 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.
Technical details
- Published
- 2019-12-19
Frequently asked questions
What is CVE-2019-19906?
cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.
Is CVE-2019-19906 actively exploited?
Active exploitation of CVE-2019-19906 has not been confirmed. Its EPSS score was 8.0% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-19906?
CVE-2019-19906 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-19906 affecting your environment?
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