CVE-2024-37371

In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can cause invalid memory reads during GSS message token handling by sending message tokens with invalid length fields.

Published: 2024-06-28 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-37371 is rated Moderate Risk (62.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.86%). 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-2024-37371

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 2.61% 1.86% -0.74%
2 2026-06-02 2.68% 2.61% -0.07%
3 2026-05-22 — 2.68% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-37371

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:N)
No account or special rights needed—anonymous or random user is enough.
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:H)
Serious risk that confidential data gets exposed in a big 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.
 3.9 5.2 [email protected]
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:N)
No account or special rights needed—anonymous or random user is enough.
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:H)
Serious risk that confidential data gets exposed in a big 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.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-37371

GitHub Security Advisory for CVE-2024-37371

GHSA-8wpj-v5qv-3wf4 · Severity: critical — In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can cause invalid memory reads during GSS...

OS Trackers for CVE-2024-37371

vendor priority summary link
alpine — CVE-2024-37371: 1 source package rows (krb5); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0. https://security.alpinelinux.org/vuln/CVE-2024-37371
debian not yet assigned CVE-2024-37371 not yet assigned priority: Debian including 1 source packages (krb5), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-37371
redhat medium — https://access.redhat.com/security/cve/CVE-2024-37371
suse medium CVE-2024-37371 severity moderate: SUSE including 460 source package names (0.0.17-1.1:krb5-1.20.1-150600.11.3.1, 0.1.6-1.2:krb5-1.20.1-150600.11.3.1, …), 1194 product×package rows across 444 product lines (Container bci/bci-init, Container bci/bci-sle15-kernel-module-devel, … (444 product lines)): Fixed 989, Known Affected 205. https://www.suse.com/security/cve/CVE-2024-37371/
ubuntu medium CVE-2024-37371 medium priority: Ubuntu including 1 source packages (krb5), 9 status rows across 9 suites (bionic, focal, jammy, mantic, noble, oracular, trusty, upstream, xenial): released 7, ignored 1, not-affected 1. https://ubuntu.com/security/CVE-2024-37371

Affected software / configurations for CVE-2024-37371

Vendor Product Version Raw CPE
mit kerberos_5 < 1.21.3 cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
debian debian_linux 12.0 cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*

References for CVE-2024-37371

cvelogic Threat Intelligence