CVE-2020-12783

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

4.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 91.2% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/A:N

NVD analysis status

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

Red Hat severity

Important. 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

2020-05-11 13:51Z6 YR AGO

Last updated

2024-08-04 12:04Z2 YR AGO

Reserved

2020-05-11

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

9c9837b20fd979e712e93b271461c947a78c0163719cc495a45ae8a180f5a417

• bugs.exim.orghttps://bugs.exim.org/show_bug.cgi?id=2571x_refsource_CONFIRM
• git.exim.orghttps://git.exim.org/exim.git/commit/57aa14b216432be381b6295c312065b2fd034f86x_refsource_CONFIRM
• git.exim.orghttps://git.exim.org/exim.git/commit/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0x_refsource_CONFIRM
• www.debian.orgDSA-4687https://www.debian.org/security/2020/dsa-4687vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20200518 [SECURITY] [DLA 2213-1] exim4 security updatehttps://lists.debian.org/debian-lts-announce/2020/05/msg00017.htmlmailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4366-1https://usn.ubuntu.com/4366-1/vendor-advisoryx_refsource_UBUNTU
• lists.fedoraproject.orgFEDORA-2020-93d7305d71https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6IQQ2SERFUD4WMRSX6XYDNK7Q4GPT7Y/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2020-2e084c987dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7Z5UG6ZIG32V7M4PP3BCC65C27EWK7G/vendor-advisoryx_refsource_FEDORA
• www.openwall.com[oss-security] 20210504 21Nails: Multiple vulnerabilities in Eximhttp://www.openwall.com/lists/oss-security/2021/05/04/7mailing-listx_refsource_MLIST