CVE-2015-3939 — Directory traversal vulnerability in the NC854 and NC856 modules for IDS RTU 850C devices allows remote authenticated users to read arbitrary files via unspecified vectors involving an internal web server, as demonstrated by reading a TELNET credentials file

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MEDIUM

Directory traversal vulnerability in the NC854 and NC856 modules for IDS RTU 850C devices allows remote authenticated users to read arbitrary files via unspecified vectors involving an internal web server, as demonstrated by reading a TELNET credentials file

Published May 31, 2015

6.8

MEDIUM

CVSS 2.0

EPSS 2.56%

Description

Directory traversal vulnerability in the NC854 and NC856 modules for IDS RTU 850C devices allows remote authenticated users to read arbitrary files via unspecified vectors involving an internal web server, as demonstrated by reading a TELNET credentials file.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.56% 0.02555

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

EPSS probability 0.02555

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	2.56% (0.02555)	84.50th	v5 (v2026.06.15)
Jun 15, 2026	2.60% (0.02605)	83.31th	v5 (v2026.06.15)
Mar 17, 2025	0.38% (0.00377)	57.18th	v4 (v2025.03.14)
Dec 12, 2024	0.10% (0.00104)	44.29th	v3 (v2023.03.01)
Jun 27, 2024	0.10% (0.00104)	42.94th	v3 (v2023.03.01)
Mar 7, 2023	0.10% (0.00104)	40.94th	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-22

Path Traversal

References (2)

http://www.securityfocus.com/bid/74900
vdb-entryx_refsource_BID
https://ics-cert.us-cert.gov/advisories/ICSA-15-148-01
x_refsource_MISCThird Party AdvisoryUS Government Resource

Link	Providers	Tags
http://www.securityfocus.com/bid/74900		vdb-entryx_refsource_BID
https://ics-cert.us-cert.gov/advisories/ICSA-15-148-01		x_refsource_MISCThird Party AdvisoryUS Government Resource

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner icscert

Published May 31, 2015

Updated Aug 6, 2024

Reserved May 12, 2015

Link CVE-2015-3939

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-3939

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-3939