CVE-2012-5662
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the...
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
Exploit likelihood
What each source reports
NVD Score used
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
CVE-2012-5662- CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-310
- Updated
- 2026-11-02
CVE List No score
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
CVE-2012-5662- Updated
- 2026-11-02
EUVDEUVD-2012-5545 No score
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
EUVD-2012-5545- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mjjm-m83r-gv3w No score
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the...
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
GHSA-mjjm-m83r-gv3w- Updated
- 2026-11-02
OSV No score
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
CVE-2012-5662- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-5662 No score
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
DEBIAN-CVE-2012-5662- Updated
- 2026-11-02
OSVUBUNTU-CVE-2012-5662 No score
x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
- Record
UBUNTU-CVE-2012-5662- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ibm-3270Debian:12 |
before 3.3.14ga11-1 | 3.3.14ga11-1 |
ibm-3270Debian:13 |
before 3.3.14ga11-1 | 3.3.14ga11-1 |
ibm-3270Debian:14 |
before 3.3.14ga11-1 | 3.3.14ga11-1 |
ibm-3270Ubuntu:18.04:LTS |
All versions, plus listed versions 3.3.14ga11-1build13.6ga4-13.6ga4-1build13.6ga4-23.6ga4-3 |
None known |
ibm-3270Ubuntu:20.04:LTS |
All versions, plus listed versions 3.6ga4-3build1 |
None known |
ibm-3270Ubuntu:22.04:LTS |
All versions, plus listed versions 4.0ga12-34.0ga14-14.0ga14-1build14.1ga10-14.1ga10-1.1 |
None known |
ibm-3270Ubuntu:24.04:LTS |
All versions, plus listed versions 4.1ga10-1.14.1ga10-1.1build14.1ga10-1.1build2 |
None known |
ibm-3270Ubuntu:25.10 |
All versions, plus listed versions 4.3ga10-44.3ga10-5 |
None known |
ibm-3270Ubuntu:26.10 |
All versions, plus listed versions 4.3ga10-5build14.3ga10-5build2 |
None known |
ibm-3270Ubuntu:26.04:LTS |
All versions, plus listed versions 4.3ga10-54.3ga10-5build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-5662 is a medium vulnerability (CVSS 5.8) in Paul Mattes X3270, published May 27, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 50th percentile. Fixed in ibm-3270 3.3.14ga11-1.