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CVE-2017-7551

29
FAUCET Score

CVE-2017-7551 describes a critical vulnerability in 389-ds-base versions prior to 1.3.5.19 and 1.3.6.7, affecting fedoraproject's 389 Directory Server. This flaw allows for password brute-force attacks due to differing return codes during account lockout attempts. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with low complexity, potentially leading to full compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.5.19CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:1.3.5.19:*:*:*:*:*:*:*
1.3.6.7CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:1.3.6.7:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 57th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: 389-ds-base-0:1.3.6.1-19.el7_4
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: 389-ds-base

Vendor Advisories (1)

redhatCVE-2017-7551Moderate

389-ds-base: Password brute-force possible for locked account due to different return codes

Jul 31, 2017

References

access.redhat.com / errata/RHSA-2017:2569
pagure.io / 389-ds-base/issue/49336
ExploitPatchThird Party Advisory