x3270: does not properly validate SSL certificates
Published May 27, 2014
5.8
MEDIUMCVSS 2.0
EPSS 0.62%
Description
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.
Affected products
No data.
- ≤ 3.3.12
- 3.3.5
- 3.3.6
- 3.3.7
- 3.3.8
- 3.3.8
- 3.3.8
- 3.3.8
- 3.3.9
- 3.3.9
- 3.3.10
- 3.3.10
- 3.3.10
- 3.3.11
- 3.3.11
- 3.3.11
- 3.3.12
- 3.3.12
- 3.3.12
No data.
Red Hat Enterprise Linux 5
x3270
Not affected
Red Hat Enterprise Linux 6
x3270
Not affected
Red Hat Enterprise Linux 7
x3270
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | x3270 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | x3270 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | x3270 | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of x3270 as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for SSL certificate verification.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.62% (0.00621) | 47.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.62% (0.00621) | 44.86th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.20% (0.00197) | 39.70th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00101) | 43.13th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.10% (0.00101) | 41.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00101) | 39.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (8)
- http://osvdb.org/91572 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/52650 third-party-advisoryx_refsource_SECUNIA
- http://sourceforge.net/projects/x3270/files/x3270/3.3.12ga12/ x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2012-5662 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=889373 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/82984 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-5662
- https://www.cve.org/CVERecord?id=CVE-2012-5662
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/91572 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/52650 | third-party-advisoryx_refsource_SECUNIA | |
| http://sourceforge.net/projects/x3270/files/x3270/3.3.12ga12/ | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2012-5662 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=889373 | x_refsource_CONFIRMIssue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/82984 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-5662 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-5662 |
Change history (0)
No recorded changes yet.