How severe is CVE-2017-5556?

CVE-2017-5556 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2017-5556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5556?

CVE-2017-5556 primarily affects Foxitsoftware Foxit Reader. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-5556?

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-2017-5556 published?

CVE-2017-5556 was published on 2017-01-23 and last updated on 2026-06-17.

CVE-2017-5556

CVE-2017-5556 is a high-severity vulnerability in Foxitsoftware Foxit Reader with a CVSS 3.x base score of 8.1. 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-125.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.8
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Foxitsoftware Foxit Reader
Published: 2017-01-23
Last modified: 2026-06-17

Description

The ConvertToPDF plugin in Foxit Reader before 8.2 and PhantomPDF before 8.2 on Windows, when the gflags app is enabled, allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted JPEG image. The vulnerability could lead to information disclosure; an attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.

Frequently asked questions

What is CVE-2017-5556?: The ConvertToPDF plugin in Foxit Reader before 8.2 and PhantomPDF before 8.2 on Windows, when the gflags app is enabled, allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted JPEG image. The vulnerability could lead to information disclosure; an attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.
How severe is CVE-2017-5556?: CVE-2017-5556 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2017-5556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5556?: CVE-2017-5556 primarily affects Foxitsoftware Foxit Reader. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-5556?: 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-2017-5556 published?: CVE-2017-5556 was published on 2017-01-23 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:foxitsoftware:foxit_reader:8.1.4.1208:*:*:*:*:*:*:*
cpe:2.3:a:foxitsoftware:phantompdf:8.1.1.1115:*:*:*:*:*:*:*

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