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CVE-2026-43862

Published: May 4, 2026Updated: May 5, 2026 Sources: CVE List NVDCWE-843
NVD MITRE
3.7CVSSLOW
EPSS Score
0.2%
Top 94.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-843

Affected Products

muttmutt
On-prem
Communications / email-server-client
muttoss-projectUSCommunicationsaka mutt mail client

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/muttmua/mutt/commit/f547a849cdacb512800a5f477c27de217e1c8151
github.com

Timeline

Published
May 4, 2026
Last Updated
May 5, 2026

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