Is CVE-2017-5454 in the CISA KEV catalog?

No. CVE-2017-5454 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-5454?

CVE-2017-5454 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2017-5454?

CVE-2017-5454 has an EPSS score of 2.52% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-5454?

Upgrade firefox on debian unstable to 52.0.1-1 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2017-5454

HIGHEPSS 83th pctl

7.5

CVSS v3

NVD

Description

A mechanism to bypass file system access protections in the sandbox to use the file picker to access different files than those selected in the file picker through the use of relative paths. This allows for read only access to the local file system. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

CWE-200Information Exposure

How to fix

Remediation Available

firefoxDebian

Fixed in:52.0.1-1CVE-2017-5454

firefoxUbuntu

Fixed in:53.0+build6-0ubuntu0.14.04.1USN-3260-1

Fixed in:53.0+build6-0ubuntu0.16.04.1USN-3260-1

thunderbirdUbuntu

Fixed in:1:52.1.1+build1-0ubuntu0.14.04.1USN-3278-1

Fixed in:1:52.1.1+build1-0ubuntu0.16.04.1USN-3278-1

DeveloperEditionWindows application

Affected:53.0Fixed in:53.0Mozilla

Affected:52.1.0Fixed in:52.1.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:53.0Fixed in:53.0Mozilla

Affected:52.1.0Fixed in:52.1.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:52.1.0Fixed in:52.1.0Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

2.52%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

bugzilla.mozilla.org

Vendor Advisory3

Third-Party Advisory4

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

Embed a live status badge for CVE-2017-5454

Markdown

[![CVE-2017-5454](https://tridentstack.com/cve/badge/CVE-2017-5454.svg)](https://tridentstack.com/cve/CVE-2017-5454)

HTML

<a href="https://tridentstack.com/cve/CVE-2017-5454"><img src="https://tridentstack.com/cve/badge/CVE-2017-5454.svg" alt="CVE-2017-5454"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-25.