CVE-2024-34055

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.

Published: 2024-06-05 Last update: 2024-12-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-34055 is rated Moderate Risk (45/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.84%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-34055

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.29% 0.84% +0.55%
2 2026-04-27 0.53% 0.29% -0.24%
3 2026-01-28 — 0.53% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-34055

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-34055

OS Trackers for CVE-2024-34055

vendor priority summary link
debian not yet assigned CVE-2024-34055 not yet assigned priority: Debian including 1 source packages (cyrus-imapd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2024-34055
redhat medium — https://access.redhat.com/security/cve/CVE-2024-34055
ubuntu medium CVE-2024-34055 medium priority: Ubuntu including 2 source packages (cyrus-imapd, cyrus-imapd-2.4), 18 status rows across 10 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, upstream, xenial): DNE 7, ignored 4, released 4, not-affected 3. https://ubuntu.com/security/CVE-2024-34055

Affected software / configurations for CVE-2024-34055

Vendor Product Version Raw CPE
cyrusimap cyrus_imap < 3.8.3 cpe:2.3:a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:*
cyrusimap cyrus_imap 3.10.0 cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:alpha0:*:*:*:*:*:*
cyrusimap cyrus_imap 3.10.0 cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:beta1:*:*:*:*:*:*
cyrusimap cyrus_imap 3.10.0 cpe:2.3:a:cyrusimap:cyrus_imap:3.10.0:beta2:*:*:*:*:*:*

References for CVE-2024-34055

cvelogic Threat Intelligence