NULL pointer dereference in Dovecot

CVE-2020-10957

In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp.

EPSS: 0.072 (93.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-10957?
CVE-2020-10957 is a high-severity vulnerability in Dovecot, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2020-05-18.
How severe is CVE-2020-10957?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-10957 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.