CVE-2020-10957

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

7.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 93.7% 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:N/I:N/A:H

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

2020-05-18 13:56Z6 YR AGO

Last updated

2024-08-04 11:21Z2 YR AGO

Reserved

2020-03-25

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

ed880fee059817926d0e02e7a6c53fde4bede2acbd94ae256bddf24a34581378

• dovecot.orghttps://dovecot.org/securityx_refsource_MISC
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/05/18/1x_refsource_CONFIRM
• www.openwall.com[oss-security] 20200518 Multiple vulnerabilities in Dovecot IMAP serverhttp://www.openwall.com/lists/oss-security/2020/05/18/1mailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4361-1https://usn.ubuntu.com/4361-1/vendor-advisoryx_refsource_UBUNTU
• seclists.org20200519 Multiple vulnerabilities in Dovecot IMAP serverhttp://seclists.org/fulldisclosure/2020/May/37mailing-listx_refsource_FULLDISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.htmlx_refsource_MISC
• www.debian.orgDSA-4690https://www.debian.org/security/2020/dsa-4690vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2020-1dee17d880https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/vendor-advisoryx_refsource_FEDORA
• lists.opensuse.orgopenSUSE-SU-2020:0720http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.htmlvendor-advisoryx_refsource_SUSE
• lists.fedoraproject.orgFEDORA-2020-b60344c987https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/vendor-advisoryx_refsource_FEDORA