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High 7.5Published Dec 19, 2019
CVE-2019-19906cyrus-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.
Updated under an hour ago ()
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It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 21 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
cyrusimap cyrus-sasl cyrusimap:cyrus-sasl | before 2.1.28 | NVD |
debian debian_linux debian:debian_linux | 8.0; 9.0; 10.0 | NVD |
canonical ubuntu_linux canonical:ubuntu_linux | 12.04; 14.04; 16.04; 18.04; 19.10 | NVD |
fedoraproject fedora fedoraproject:fedora | 31; 32 | NVD |
redhat jboss_enterprise_web_server redhat:jboss_enterprise_web_server | 2.0.0 | NVD |
apple mac_os_x apple:mac_os_x | 10.14.6; before 10.13.6; from 10.13.0 before 10.13.6; from 10.15.0 before 10.15.6; 10.13.6; 10.13.6; 10.13.6; 10.13.6; and 18 more ranges | NVD |
redhat enterprise_linux redhat:enterprise_linux | 5.0; 6.0; 7.0; 8.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 8.4 | NVD |
redhat enterprise_linux_for_ibm_z_systems redhat:enterprise_linux_for_ibm_z_systems | 8.0 | NVD |
redhat enterprise_linux_for_ibm_z_systems_eus redhat:enterprise_linux_for_ibm_z_systems_eus | 8.4 | NVD |
redhat enterprise_linux_for_power_little_endian redhat:enterprise_linux_for_power_little_endian | 8.0 | NVD |
redhat enterprise_linux_for_power_little_endian_eus redhat:enterprise_linux_for_power_little_endian_eus | 8.4 | NVD |
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus | 8.4 | NVD |
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.4 | NVD |
redhat enterprise_linux_server_tus redhat:enterprise_linux_server_tus | 8.4 | NVD |
redhat enterprise_linux_server_update_services_for_sap_solutions redhat:enterprise_linux_server_update_services_for_sap_solutions | 8.4 | NVD |
apple ipados apple:ipados | 13.6 | NVD |
apple iphone_os apple:iphone_os | 13.6 | NVD |
apache bookkeeper apache:bookkeeper | 4.12.1 | NVD |
References
- https://github.com/cyrusimap/cyrus-sasl/issues/587x-refsource-misc, patch, third-party-advisory
- https://www.openldap.org/its/index.cgi/Incoming?id=9123x-refsource-misc, exploit, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2019/12/msg00027.htmlmailing-list, x-refsource-mlist, third-party-advisory
- https://www.debian.org/security/2019/dsa-4591vendor-advisory, x-refsource-debian, third-party-advisory
- https://seclists.org/bugtraq/2019/Dec/42mailing-list, x-refsource-bugtraq, third-party-advisory
- https://usn.ubuntu.com/4256-1/vendor-advisory, x-refsource-ubuntu, patch, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MW6GZCLECGL2PBNHVNPJIX4RPVRVFR7R/vendor-advisory, x-refsource-fedora
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OB4GSVOJ6ESHQNT5GSV63OX5D4KPSTGT/vendor-advisory, x-refsource-fedora
- https://support.apple.com/kb/HT211288x-refsource-confirm, third-party-advisory
- https://support.apple.com/kb/HT211289x-refsource-confirm, third-party-advisory
- http://seclists.org/fulldisclosure/2020/Jul/24mailing-list, x-refsource-fulldisc, third-party-advisory
- http://seclists.org/fulldisclosure/2020/Jul/23mailing-list, x-refsource-fulldisc, third-party-advisory
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Emailing-list, x-refsource-mlist
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Emailing-list, x-refsource-mlist
- http://www.openwall.com/lists/oss-security/2022/02/23/4mailing-list, x-refsource-mlist, patch, release-notes, third-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.