CVE & CISA-KEV Catalog

CVE-2017-5445

HIGHEPSS 84th pctl
7.5
CVSS v3
NVD

Description

A vulnerability while parsing "application/http-index-format" format content where uninitialized values are used to create an array. This could allow the reading of uninitialized memory into the arrays affected. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CWE-129

How to fix

Remediation Available
firefoxDebian
Fixed in:52.0.1-1CVE-2017-5445
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:45.9.0Fixed in:45.9.0Mozilla
Mozilla Firefox (en-US)Windows application
Affected:53.0Fixed in:53.0Mozilla
Affected:45.9.0Fixed in:45.9.0Mozilla
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

2.70%probability of exploitation in 30 days
84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

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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.