CVE-2015-6309 — Cisco Email Security Appliance (ESA) 8.5.6-106 and 9.6.0-042 allows remote authenticated users to cause a denial of service (file-descriptor consumption and device reload) via crafted HTTP requests, aka Bug ID CSCuw32211

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MEDIUM

Cisco Email Security Appliance (ESA) 8.5.6-106 and 9.6.0-042 allows remote authenticated users to cause a denial of service (file-descriptor consumption and device reload) via crafted HTTP requests, aka Bug ID CSCuw32211

Published Oct 2, 2015

6.8

MEDIUM

CVSS 2.0

EPSS 1.70%

Description

Cisco Email Security Appliance (ESA) 8.5.6-106 and 9.6.0-042 allows remote authenticated users to cause a denial of service (file-descriptor consumption and device reload) via crafted HTTP requests, aka Bug ID CSCuw32211.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.70% 0.01700

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01700

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.70% (0.01700)	76.37th	v5 (v2026.06.15)
Jun 15, 2026	1.70% (0.01700)	74.15th	v5 (v2026.06.15)
Mar 17, 2025	0.73% (0.00726)	70.92th	v4 (v2025.03.14)
Dec 12, 2024	0.11% (0.00108)	45.32th	v3 (v2023.03.01)
Jun 27, 2024	0.11% (0.00108)	43.97th	v3 (v2023.03.01)
Mar 7, 2023	0.11% (0.00108)	41.97th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-399

References (2)

http://tools.cisco.com/security/center/viewAlert.x?alertId=41241
vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1033716
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Link	Providers	Tags
http://tools.cisco.com/security/center/viewAlert.x?alertId=41241		vendor-advisoryx_refsource_CISCOVendor Advisory
http://www.securitytracker.com/id/1033716		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Oct 2, 2015

Updated Aug 6, 2024

Reserved Aug 17, 2015

Link CVE-2015-6309

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-6309

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-6309