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CVE-2015-5377

32
FAUCET Score

CVE-2015-5377 describes a critical arbitrary code execution vulnerability in Elasticsearch versions prior to 1.6.1, specifically affecting its transport protocol. With a CVSS score of 9.8, this flaw allows unauthenticated remote attackers to fully compromise affected systems with low attack complexity. While no public exploit intelligence or active exploitation has been observed, its high severity and potential for complete system compromise warrant immediate patching. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6.1CPE matchmatch criteria
cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*

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
14.58%
Probability of exploitation in next 30 days
EPSS Percentile
96.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1458 is in the 92nd 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 (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: elasticsearch
redhatend of lifevia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: elasticsearch

Vendor Advisories (1)

redhatCVE-2015-5377Low

elasticsearch: unspecified remote code execution vulnerability

Jul 16, 2015

References

discuss.elastic.co / t/elasticsearch-remote-code-execution-cve-2015-5377/25736
Vendor Advisory
github.com / elastic/elasticsearch/commit/bf3052d14c874aead7da8855c5fcadf5428a43f2
PatchThird Party Advisory
securityfocus.com / bid/75938
Third Party AdvisoryVDB Entry
zerodayinitiative.com / advisories/ZDI-15-365
Third Party AdvisoryVDB Entry