PatchTheCVECVE-2024-37370: In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confid
CVE-2024-37370 is a high-severity flaw (CVSS 7.5) affecting kerberos 5. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 45%) |
| CISA exploited list | No |
| Weakness | CWE-345 |
| Published | 2024-06-28 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-37370?
kerberos 5: upgrade to 1.21.3. Exact commands for each OS are on this page.
Is CVE-2024-37370 being exploited?
CVE-2024-37370 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2024-37370 affect?
CVE-2024-37370 affects kerberos 5. Severity is high (CVSS 7.5). In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.
How urgent is CVE-2024-37370?
Priority 45/100. High severity; Remotely exploitable, no login, no user action
Related CVEs
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- CVE-2022-42898 HIGH 8.8 UPGRADE UPGRADE PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may
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