CVE-2019-19977

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

2.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 86.9% 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:3.1/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

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

2019-12-26 00:07Z6 YR AGO

Last updated

2024-08-05 02:32Z2 YR AGO

Reserved

2019-12-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

272e4267ced58eed13e7ce208331c08a674ef651ed622b1d6c16ca986a6fbc6d

• github.comhttps://github.com/Kirin-say/Vulnerabilities/blob/master/Stack_Overflow_in_libesmtp.mdx_refsource_MISC
• github.comhttps://github.com/jbouse-debian/libesmtp/blob/ca5bd0800ef1da234315da4c59716568eb5e6402/ntlm/ntlmstruct.c#L228-L242x_refsource_MISC
• web.archive.orghttps://web.archive.org/web/20190528215510/http://brianstafford.info/libesmtp/x_refsource_MISC