How severe is CVE-2019-20834?

CVE-2019-20834 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-20834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20834?

CVE-2019-20834 affects Foxitsoftware Phantompdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20834?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-20834 published?

CVE-2019-20834 was published on 2020-06-04 and last updated on 2026-06-17.

CVE-2019-20834

CVE-2019-20834 is a high-severity vulnerability in Foxitsoftware Phantompdf with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Foxitsoftware Phantompdf
Published: 2020-06-04
Last modified: 2026-06-17

Description

An issue was discovered in Foxit PhantomPDF before 8.3.10. It allows signature validation bypass via a modified file or a file with non-standard signatures.

Frequently asked questions

What is CVE-2019-20834?: An issue was discovered in Foxit PhantomPDF before 8.3.10. It allows signature validation bypass via a modified file or a file with non-standard signatures.
How severe is CVE-2019-20834?: CVE-2019-20834 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-20834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20834?: CVE-2019-20834 affects Foxitsoftware Phantompdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20834?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-20834 published?: CVE-2019-20834 was published on 2020-06-04 and last updated on 2026-06-17.

References

https://www.foxitsoftware.com/support/security-bulletins.php

Affected products (1)

cpe:2.3:a:foxitsoftware:phantompdf:*:*:*:*:*:*:*:*

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