How severe is CVE-2023-28428?

CVE-2023-28428 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-28428 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28428?

CVE-2023-28428 affects Pdfio Project Pdfio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28428?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-28428 published?

CVE-2023-28428 was published on 2023-03-20 and last updated on 2026-06-17.

CVE-2023-28428

CVE-2023-28428 is a medium-severity vulnerability in Pdfio Project Pdfio with a CVSS 3.x base score of 6.2. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Pdfio Project Pdfio
Published: 2023-03-20
Last modified: 2026-06-17

Description

PDFio is a C library for reading and writing PDF files. In versions 1.1.0 and prior, a denial of service vulnerability exists in the pdfio parser. Crafted pdf files can cause the program to run at 100% utilization and never terminate. This is different from CVE-2023-24808. A patch for this issue is available in version 1.1.1.

Frequently asked questions

What is CVE-2023-28428?: PDFio is a C library for reading and writing PDF files. In versions 1.1.0 and prior, a denial of service vulnerability exists in the pdfio parser. Crafted pdf files can cause the program to run at 100% utilization and never terminate. This is different from CVE-2023-24808. A patch for this issue is available in version 1.1.1.
How severe is CVE-2023-28428?: CVE-2023-28428 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-28428 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28428?: CVE-2023-28428 affects Pdfio Project Pdfio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28428?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28428 published?: CVE-2023-28428 was published on 2023-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pdfio_project:pdfio:*:*:*:*:*:*:*:*

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