CVE-2018-5158

high-risk
Published 2018-06-11

The PDF viewer does not sufficiently sanitize PostScript calculator functions, allowing malicious JavaScript to be injected through a crafted PDF file. This JavaScript can then be run with the permissions of the PDF viewer by its worker. This vulnerability affects Firefox ESR < 52.8 and Firefox < 60.

Do I need to act?

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43.0% chance of exploitation in next 30 days
EPSS score — higher than 57% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Vendors

66
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 17/34 · Moderate
Exposure 19/34 · Moderate