How severe is CVE-2017-18185?

CVE-2017-18185 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-18185 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18185?

CVE-2017-18185 affects Qpdf Project Qpdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18185?

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

When was CVE-2017-18185 published?

CVE-2017-18185 was published on 2018-02-13 and last updated on 2026-06-17.

CVE-2017-18185

CVE-2017-18185 is a medium-severity vulnerability in Qpdf Project Qpdf with a CVSS 3.x base score of 5.5. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Qpdf Project Qpdf
Published: 2018-02-13
Last modified: 2026-06-17

Description

An issue was discovered in QPDF before 7.0.0. There is a large heap-based out-of-bounds read in the Pl_Buffer::write function in Pl_Buffer.cc. It is caused by an integer overflow in the PNG filter.

Frequently asked questions

What is CVE-2017-18185?: An issue was discovered in QPDF before 7.0.0. There is a large heap-based out-of-bounds read in the Pl_Buffer::write function in Pl_Buffer.cc. It is caused by an integer overflow in the PNG filter.
How severe is CVE-2017-18185?: CVE-2017-18185 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-18185 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18185?: CVE-2017-18185 affects Qpdf Project Qpdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18185?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18185 published?: CVE-2017-18185 was published on 2018-02-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:qpdf_project:qpdf:*:*:*:*:*:*:*:*

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