Cyrus IMAP before 3.8.3 and 3.10.x before 3.10.0-rc1 allows authenticated attackers to…
Priority LOW 30CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-770.
Summary
Cyrus IMAP before 3.8.3 and 3.10.x before 3.10.0-rc1 allows authenticated attackers to cause unbounded memory allocation by sending many LITERALs in a single command.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00836 57th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:* | before 3.8.3 | Vulnerable | cyrusimap |
| cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:alpha0:*:*:*:*:*:* | 3.10.0 alpha0 | Vulnerable | cyrusimap |
| cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:beta1:*:*:*:*:*:* | 3.10.0 beta1 | Vulnerable | cyrusimap |
| cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:beta2:*:*:*:*:*:* | 3.10.0 beta2 | Vulnerable | cyrusimap |
- cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:* Versions before 3.8.3 Vulnerable ·cyrusimap
- cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:alpha0:*:*:*:*:*:* Versions 3.10.0 alpha0 Vulnerable ·cyrusimap
- cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:beta1:*:*:*:*:*:* Versions 3.10.0 beta1 Vulnerable ·cyrusimap
- cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:beta2:*:*:*:*:*:* Versions 3.10.0 beta2 Vulnerable ·cyrusimap
Remediation
Red Hat 1 advisory
- RHSA-2024:9195 Released 2024-11-12 · Red Hat rating Moderatecyrus-imapd security update
- Red Hat Enterprise Linux AppStream (v. 9) cyrus-imapd-3.4.8-1.el9, cyrus-imapd-libs-3.4.8-1.el9, cyrus-imapd-utils-3.4.8-1.el9 +1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:9195 |
Not affected: 1 product
- Red Hat Enterprise Linux 10
Timeline
- 2026-10-02 Threatist record created from CVE-2024-34055
- 2026-10-03 Alias added: GHSA-crp5-539g-qwq6
References
More cyrusimap Cyrus Imap vulnerabilities
- TI-2017-09510 Cyrus IMAP before 3.0.3 allows remote authenticated users to write to arbitrary files via… CVSS 3.0MEDIUM 6.5
Sources
- CVE-2024-34055 · CVE Program
- CVE-2024-34055 · NVD
- FIRST EPSS
- GHSA-crp5-539g-qwq6 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-34055 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences