SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2015-5377

Elasticsearch before 1.6.1 allows remote attackers to execute arbitrary code via unspecified vectors involving the transport protocol.

CRITICAL 9.8EPSS 14.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 14.4%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.

Description

Elasticsearch before 1.6.1 allows remote attackers to execute arbitrary code via unspecified vectors involving the transport protocol. NOTE: ZDI appears to claim that CVE-2015-3253 and CVE-2015-5377 are the same vulnerability

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
14.43% probability · 97th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-74
Affected
elastic/elasticsearch
Source
cve@mitre.org
EPSS trend
0%8%15%21 September 2026: 12.35%22 September 2026: 14.31%4 November 2026: 14.43%21 September 20264 November 2026

EPSS moved from 12.4% on 21 September 2026 to 14.4% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.