CVE-2018-12356

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

4.59% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 91.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2018-06-15 02:00Z8 YR AGO

Last updated

2024-08-05 08:30Z2 YR AGO

Reserved

2018-06-13

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

373000f052404ea48e5ded77eb392fbbf99dbb5fa8badd95d37bb7f720584465

• git.zx2c4.comhttps://git.zx2c4.com/password-store/commit/?id=8683403b77f59c56fcb1f05c61ab33b9fd61a30dx_refsource_MISC
• openwall.comhttp://openwall.com/lists/oss-security/2018/06/14/3x_refsource_MISC
• lists.zx2c4.comhttps://lists.zx2c4.com/pipermail/password-store/2018-June/003308.htmlx_refsource_MISC
• 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