fetchmail before 6.3.1 and before 6.2.5.5, when configured for multidrop mode, allows…
Priority MEDIUM 40CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
fetchmail before 6.3.1 and before 6.2.5.5, when configured for multidrop mode, allows remote attackers to cause a denial of service (application crash) by sending messages without headers from upstream mail servers.
Why it matters now
EPSS 0.03641 89th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2007:0018 Released 2007-01-31 · Red Hat rating Moderatefetchmail security update
- Red Hat Desktop version 3 fetchmail-6.2.0-3.el3.3, fetchmail-6.2.0-3.el3.3.i386
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1 fetchmail-5.9.0-21.7.3.el2.1.4, fetchmail-5.9.0-21.7.3.el2.1.4.i386, fetchmail-5.9.0-21.7.3.el2.1.4.ia64 +2
- Red Hat Enterprise Linux AS version 3 fetchmail-6.2.0-3.el3.3, fetchmail-6.2.0-3.el3.3.i386, fetchmail-6.2.0-3.el3.3.ia64 +1
- Red Hat Enterprise Linux AS version 4 fetchmail-6.2.5-6.el4.5, fetchmail-6.2.5-6.el4.5.i386, fetchmail-6.2.5-6.el4.5.ia64 +1
- Red Hat Enterprise Linux Desktop version 4 fetchmail-6.2.5-6.el4.5, fetchmail-6.2.5-6.el4.5.i386
- Red Hat Enterprise Linux ES version 2.1 fetchmail-5.9.0-21.7.3.el2.1.4, fetchmail-5.9.0-21.7.3.el2.1.4.i386, fetchmailconf-5.9.0-21.7.3.el2.1.4.i386
- Red Hat Enterprise Linux ES version 3 fetchmail-6.2.0-3.el3.3, fetchmail-6.2.0-3.el3.3.i386, fetchmail-6.2.0-3.el3.3.ia64
- Red Hat Enterprise Linux ES version 4 fetchmail-6.2.5-6.el4.5, fetchmail-6.2.5-6.el4.5.i386, fetchmail-6.2.5-6.el4.5.ia64
- Red Hat Enterprise Linux WS version 2.1 fetchmail-5.9.0-21.7.3.el2.1.4, fetchmail-5.9.0-21.7.3.el2.1.4.i386, fetchmailconf-5.9.0-21.7.3.el2.1.4.i386
- Red Hat Enterprise Linux WS version 3 fetchmail-6.2.0-3.el3.3, fetchmail-6.2.0-3.el3.3.i386, fetchmail-6.2.0-3.el3.3.ia64
- Red Hat Enterprise Linux WS version 4 fetchmail-6.2.5-6.el4.5, fetchmail-6.2.5-6.el4.5.i386, fetchmail-6.2.5-6.el4.5.ia64
- Red Hat Linux Advanced Workstation 2.1 fetchmail-5.9.0-21.7.3.el2.1.4, fetchmail-5.9.0-21.7.3.el2.1.4.ia64, fetchmailconf-5.9.0-21.7.3.el2.1.4.ia64
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2007:0018 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2007:0018 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2007:0018 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-4348
- 2026-10-03 Alias added: GHSA-5g7c-7whj-r862
References
More Fetchmail vulnerabilities
- TI-2001-00964 Fetchmail (aka fetchmail-ssl) before 5.8.17 allows a remote malicious (1) IMAP server or… CVSS 2.0HIGH 10.0
- TI-2001-00101 Vulnerability in fetchmail 5.5.0-2 and earlier in the AUTHENTICATE GSSAPI command. CVSS 2.0HIGH 10.0
- TI-2001-00782 A buffer overflow in Linux fetchmail before 5.8.6 allows remote attackers to execute… CVSS 2.0HIGH 7.5
- TI-2006-05756 fetchmail 6.3.5 and 6.3.6 before 6.3.6-rc4, when refusing a message delivered via the mda… CVSS 2.0HIGH 7.8
- TI-2006-05650 fetchmail before 6.3.6-rc4 does not properly enforce TLS and may transmit cleartext… CVSS 2.0HIGH 7.8
- TI-2002-01289 Heap-based buffer overflow in Fetchmail 6.1.3 and earlier does not account for the "@"… CVSS 2.0HIGH 7.5
Sources
- CVE-2005-4348 · CVE Program
- CVE-2005-4348 · NVD
- FIRST EPSS
- GHSA-5g7c-7whj-r862 · GitHub Advisory Database · CC BY 4.0
- CVE-2005-4348 · Red Hat security data · CC BY 4.0
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