CVE-2015-3420

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.84% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 85.7% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2017-09-19 15:00Z8 YR AGO

Last updated

2024-08-06 05:47Z2 YR AGO

Reserved

2015-04-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-295Improper Certificate ValidationBase
• CWE-391Unchecked Error ConditionBase

Data version

5.1

Document digest

1d3ea09e8a8732d1dd7a828d9879bce11f0d29f8c93aaaf149b0246a3f3c5d44

• www.openwall.com[oss-security] 20150428 Re: Re: CVE request: Dovecot remote DoS on TLS connectionshttp://www.openwall.com/lists/oss-security/2015/04/28/4mailing-listx_refsource_MLIST
• dovecot.org[dovecot] 20150424 [patch] TLS Handshake failures can crash imap-loginhttps://dovecot.org/pipermail/dovecot/2015-April/100618.htmlmailing-listx_refsource_MLIST
• dovecot.org[dovecot-news] 20150513 [Dovecot-news] v2.2.17 releasedhttps://dovecot.org/pipermail/dovecot-news/2015-May/000292.htmlmailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2015-7159http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158261.htmlvendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2015-7156http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157030.htmlvendor-advisoryx_refsource_FEDORA
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1216057x_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2015-7089http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158236.htmlvendor-advisoryx_refsource_FEDORA
• www.openwall.com[oss-security] 20150427 Re: CVE request: Dovecot remote DoS on TLS connectionshttp://www.openwall.com/lists/oss-security/2015/04/27/1mailing-listx_refsource_MLIST
• www.securityfocus.com74335http://www.securityfocus.com/bid/74335vdb-entryx_refsource_BID