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01 Record

CVE-2020-28896

Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 Description

Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and

03 Exploitation and scoring

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
2.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 83.4% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. 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.

04 Metadata

Published
2020-11-23 18:52Z5 YR AGO
Last updated
2024-08-04 16:41Z2 YR AGO
Reserved
2020-11-17
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-287Improper AuthenticationClass
  • CWE-755Improper Handling of Exceptional ConditionsClass
  • CWE-319Cleartext Transmission of Sensitive InformationBase
Data version
5.1
Document digest
ac025fdf14cc186bb84a308e55707ad112863eacd3a1bc8a17da2da73952daa8

05 Affected products

VendorProductVersionsPlatforms
debiandebian_linuxNot specified—
muttmuttNot specified—
neomuttneomuttNot specified—
redhatenterprise_linuxNot specified—

06 References

07 Fixed in

AlmaLinux 8

  • mutt
    Fixed in 5:2.0.7-1.el8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • mutt
    Fixed in 2.0.2-1
  • neomutt
    Fixed in 20201120-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • mutt
    Fixed in 5:2.0.7-1.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • mutt
    Fixed in 2.0.2-1
  • neomutt
    Fixed in 20201120+dfsg.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • mutt
    Fixed in 2.0.2-1
  • neomutt
    Fixed in 20201120+dfsg.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • mutt
    Fixed in 2.0.2-1
  • neomutt
    Fixed in 20201120+dfsg.1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • mutt
    Fixed in 1.5.24-1ubuntu0.5

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • mutt
    Fixed in 1.9.4-3ubuntu0.4

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • mutt
    Fixed in 1.13.2-1ubuntu0.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • neomutt
    Fixed in 20171215+dfsg.1-1ubuntu0.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • neomutt
    Fixed in 20191207+dfsg.1-1.1ubuntu0.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.