CVE-2018-15587

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

2.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 84.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. 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

2019-02-11 17:00Z7 YR AGO

Last updated

2024-08-05 10:01Z2 YR AGO

Reserved

2018-08-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-347Improper Verification of Cryptographic SignatureBase

Data version

5.1

Document digest

d9889e1f27649af3171ea5aa29cbaabf14dda8e6cce41950a94a00edc9118914

• bugzilla.gnome.orghttps://bugzilla.gnome.org/show_bug.cgi?id=796424x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20190426 [SECURITY] [DLA 1766-1] evolution security updatehttps://lists.debian.org/debian-lts-announce/2019/04/msg00027.htmlmailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20190430 Spoofing OpenPGP and S/MIME Signatures in Emails (multiple clients)http://www.openwall.com/lists/oss-security/2019/04/30/4mailing-listx_refsource_MLIST
• seclists.org20190430 OpenPGP and S/MIME signature forgery attacks in multiple email clientshttp://seclists.org/fulldisclosure/2019/Apr/38mailing-listx_refsource_FULLDISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlx_refsource_MISC
• github.comhttps://github.com/RUB-NDS/Johnny-You-Are-Firedx_refsource_MISC
• github.comhttps://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdfx_refsource_MISC
• lists.opensuse.orgopenSUSE-SU-2019:1431http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00047.htmlvendor-advisoryx_refsource_SUSE
• lists.opensuse.orgopenSUSE-SU-2019:1453http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00061.htmlvendor-advisoryx_refsource_SUSE
• usn.ubuntu.comUSN-3998-1https://usn.ubuntu.com/3998-1/vendor-advisoryx_refsource_UBUNTU
• www.debian.orgDSA-4457https://www.debian.org/security/2019/dsa-4457vendor-advisoryx_refsource_DEBIAN
• lists.opensuse.orgopenSUSE-SU-2019:1528http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00024.htmlvendor-advisoryx_refsource_SUSE
• seclists.org20190609 [SECURITY] [DSA 4457-1] evolution security updatehttps://seclists.org/bugtraq/2019/Jun/7mailing-listx_refsource_BUGTRAQ