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CVE-2018-1000538

22
FAUCET Score

CVE-2018-1000538 is a Denial of Service vulnerability affecting Minio S3 server versions prior to RELEASE.2018-05-16T23-35-33Z. This flaw, similar to CWE-774 (Allocation of Memory Without Limits or Throttling), allows an unauthenticated attacker to exhaust server memory by sending large V4-signed requests. With a CVSS v3 score of 7.5 (HIGH), the vulnerability is easily exploitable over the network with no user interaction required, leading to a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2018-05-16t23-35-33zCPE matchmatch criteria
cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:*

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:N/A:H

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

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 53rd 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / minio/minio/commit/9c8b7306f55f2c8c0a5c7cea9a8db9d34be8faa7
PatchThird Party Advisory
github.com / minio/minio/pull/5957
Issue TrackingThird Party Advisory