Disclosure summary
There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).
Source-reported weakness categories
CWE-190
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2019-1551
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| openssl | openssl | * {"versionStartIncluding":"1.1.1","versionEndIncluding":"1.1.1d"} |
| opensuse | leap | 15.1 |
| oracle | enterprise_manager_ops_center | 12.4.0.0 |
| oracle | mysql_enterprise_monitor | * {"versionStartIncluding":"8.0.0","versionEndIncluding":"8.0.20"} |
| oracle | peoplesoft_enterprise_peopletools | 8.56 |
| oracle | peoplesoft_enterprise_peopletools | 8.57 |
| oracle | peoplesoft_enterprise_peopletools | 8.58 |
| canonical | ubuntu_linux | 16.04 |
| canonical | ubuntu_linux | 18.04 |
| canonical | ubuntu_linux | 19.10 |
| fedoraproject | fedora | 30 |
| fedoraproject | fedora | 31 |
| fedoraproject | fedora | 32 |
| debian | debian_linux | 9.0 |
| debian | debian_linux | 10.0 |
| tenable | log_correlation_engine | * {"versionEndExcluding":"6.0.9"} |
Original records & references
- NIST NVD record
- CVE Program record
- git.openssl.org
- git.openssl.org
- lists.debian.org — Mailing List, Third Party Advisory
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- seclists.org — Mailing List, Third Party Advisory
- seclists.org — Mailing List, Third Party Advisory
- security.gentoo.org — Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.openssl.org — Vendor Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
- git.openssl.org
- git.openssl.org
- lists.debian.org — Mailing List, Third Party Advisory
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- seclists.org — Mailing List, Third Party Advisory
- seclists.org — Mailing List, Third Party Advisory
- security.gentoo.org — Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.openssl.org — Vendor Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
- www.tenable.com — Third Party Advisory
PUBLISHED 2019-12-06T13:15:12-05:00
MODIFIED 2026-10-08T18:16:51-04:00
INGESTED 2026-10-10T20:50:19-04:00