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CVE-2018-5709

24
FAUCET Score

CVE-2018-5709 is a data truncation vulnerability in MIT Kerberos 5 (krb5) through version 1.16, stemming from a mismatch in variable size during database operations. This flaw, rated High severity (CVSS 7.5), allows an unauthenticated attacker to remotely corrupt trusted Kerberos database dump files, leading to high integrity impact. Despite its severity, there is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5-1.16CPE matchmatch criteria
cpe:2.3:a:mit:kerberos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 64th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-5709

krb5: integer overflow in dbentry->n_key_data in kadmin/dbutil/dump.c

Jan 15, 2018

References

github.com / poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Integer%20Overflow
Third Party Advisory
lists.apache.org / thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E