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CVE-2020-10957

HIGH
7.5
CVSS Score
Published: May 18, 2020 at 01:56 PM UTC
Updated: June 17, 2026 at 02:48 AM UTC
1 product affected across 1 vendorDovecot

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Severity
HIGH7.5
Exploit prediction
EPSS 7%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dovecot· Dovecot
95%
v < 2.3.10.1
Affected range stops below 2.3.10.1, so it looks safe — our inference, not a vendor statement

References (10)

Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html
x_refsource_MISC
Source: [email protected]
http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html
Mailing Listx_refsource_FULLDISCExploitThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/May/37
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/05/18/1
x_refsource_MISCVendor Advisory
Source: [email protected]
https://dovecot.org/security
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/
Vendor Advisoryx_refsource_UBUNTU
Source: [email protected]
https://usn.ubuntu.com/4361-1/

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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