CVE catalog

CVE-2015-7744

wolfssl: CVE-2015-7744

Severity: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: Jan 19, 2016, 11:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 5.07% · Oct 25, 2026

wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS handshakes, aka a Lenstra attack.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	wolfssl	sid	`5.9.2-1.2`	fixed
Debian	wolfssl	trixie	`5.7.2-0.1+deb13u2`	fixed
Debian	wolfssl	bookworm	`5.5.4-2+deb12u2`	fixed
Debian	wolfssl	bookworm-security	`5.5.4-2+deb12u3`	fixed
Ubuntu	mariadb-5.5	14.04	`5.5.32-1ubuntu1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.35-1ubuntu1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.36-1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.37-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.39-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.40-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.41-0ubuntu0.14.04.2`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.41-1ubuntu0.14.04.1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.43-1ubuntu0.14.04.2`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.44-1ubuntu0.14.04.1`	vulnerable
Ubuntu	mariadb-5.5	14.04	`5.5.46-1ubuntu0.14.04.2`	fixed
Ubuntu	mysql-5.5	14.04	`5.5.32-0ubuntu7`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.34-0ubuntu1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.34-0ubuntu2`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.35-0ubuntu1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.35+dfsg-1ubuntu1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.37-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.38-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.40-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.41-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.43-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.44-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.5	14.04	`5.5.46-0ubuntu0.14.04.2`	fixed
Ubuntu	mysql-5.6	14.04	`5.6.15-0ubuntu1`	vulnerable
Ubuntu	mysql-5.6	14.04	`5.6.15-1~exp2`	vulnerable
Ubuntu	mysql-5.6	14.04	`5.6.16-1~exp1`	vulnerable
Ubuntu	mysql-5.6	14.04	`5.6.17-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.6	14.04	`5.6.19-0ubuntu0.14.04.1`	vulnerable
Ubuntu	mysql-5.6	14.04	`5.6.27-0ubuntu0.14.04.1`	fixed
Ubuntu	percona-xtradb-cluster-5.6	16.04	`5.6.21-25.8-0ubuntu2`	vulnerable
Ubuntu	percona-xtradb-cluster-5.6	16.04	`5.6.21-25.8-0ubuntu3`	vulnerable
Ubuntu	percona-xtradb-cluster-5.6	16.04	`5.6.21-25.8-0ubuntu3.1`	vulnerable
Ubuntu	percona-xtradb-cluster-5.6	16.04	`5.6.21-25.8-0ubuntu3.2`	vulnerable
Ubuntu	percona-xtradb-cluster-5.6	16.04	`5.6.34-26.19-0ubuntu0.16.04.1`	fixed
Ubuntu	percona-server-5.6	16.04	`5.6.22-rel71.0-0ubuntu2`	vulnerable
Ubuntu	percona-server-5.6	16.04	`5.6.22-rel71.0-0ubuntu4`	vulnerable
Ubuntu	percona-server-5.6	16.04	`5.6.22-rel71.0-0ubuntu4.1`	vulnerable
Suse	mysql	linux enterprise software development kit 11 sp3	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise software development kit 11 sp4	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise desktop 11 sp3	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise desktop 11 sp4	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise server 11 sp3	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise server 11 sp3-teradata	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise server for sap applications 11 sp3	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise server 11 sp4	`5.5.47-0.17.1`	fixed
Suse	mysql	linux enterprise server for sap applications 11 sp4	`5.5.47-0.17.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wolfssl	source	sid	`3.9.10+dfsg-1`	not yet assigned	Not reported	Not reported
Debian	wolfssl	source	trixie	`3.9.10+dfsg-1`	not yet assigned	Not reported	Not reported
Debian	wolfssl	source	bookworm	`3.9.10+dfsg-1`	not yet assigned	Not reported	Not reported
Ubuntu	mariadb-5.5	deb	14.04	`5.5.46-1ubuntu0.14.04.2`	Not reported	UBUNTU-CVE-2015-7744	Not reported
Ubuntu	mysql-5.5	deb	14.04	`5.5.46-0ubuntu0.14.04.2`	Not reported	UBUNTU-CVE-2015-7744	Not reported
Ubuntu	mysql-5.6	deb	14.04	`5.6.27-0ubuntu0.14.04.1`	Not reported	UBUNTU-CVE-2015-7744	Not reported
Ubuntu	percona-xtradb-cluster-5.6	deb	16.04	`5.6.34-26.19-0ubuntu0.16.04.1`	Not reported	UBUNTU-CVE-2015-7744	Not reported
Suse	mysql	rpm	linux enterprise software development kit 11 sp3	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise software development kit 11 sp4	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise desktop 11 sp3	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise desktop 11 sp4	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise server 11 sp3	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise server 11 sp3-teradata	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise server for sap applications 11 sp3	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise server 11 sp4	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported
Suse	mysql	rpm	linux enterprise server for sap applications 11 sp4	`5.5.47-0.17.1`	Not reported	SUSE-SU-2016:0348-1	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwolfssl35]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12

[Debian 13 (Trixie)]

[libwolfssl42t64]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · 13
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.9.10+dfsg-1
  dsa · wolfssl · debian · 13

Observed: Oct 23, 2026, 5:16:36 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]