How severe is CVE-2018-20797?

CVE-2018-20797 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-20797 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20797?

CVE-2018-20797 affects Podofo Project Podofo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20797?

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

When was CVE-2018-20797 published?

CVE-2018-20797 was published on 2019-02-27 and last updated on 2026-06-17.

CVE-2018-20797

CVE-2018-20797 is a medium-severity vulnerability in Podofo Project Podofo with a CVSS 3.x base score of 6.5. 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Podofo Project Podofo
Published: 2019-02-27
Last modified: 2026-06-17

Description

An issue was discovered in PoDoFo 0.9.6. There is an attempted excessive memory allocation in PoDoFo::podofo_calloc in base/PdfMemoryManagement.cpp when called from PoDoFo::PdfPredictorDecoder::PdfPredictorDecoder in base/PdfFiltersPrivate.cpp.

Frequently asked questions

What is CVE-2018-20797?: An issue was discovered in PoDoFo 0.9.6. There is an attempted excessive memory allocation in PoDoFo::podofo_calloc in base/PdfMemoryManagement.cpp when called from PoDoFo::PdfPredictorDecoder::PdfPredictorDecoder in base/PdfFiltersPrivate.cpp.
How severe is CVE-2018-20797?: CVE-2018-20797 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-20797 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20797?: CVE-2018-20797 affects Podofo Project Podofo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20797?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-20797 published?: CVE-2018-20797 was published on 2019-02-27 and last updated on 2026-06-17.

References

https://sourceforge.net/p/podofo/tickets/34/

Affected products (1)

cpe:2.3:a:podofo_project:podofo:0.9.6:*:*:*:*:*:*:*

More vulnerabilities in Podofo Project Podofo

CVE-2019-9687 — Critical (CVSS 9.8): PoDoFo 0.9.6 has a heap-based buffer overflow in PdfString::ConvertUTF16toUTF8 in base/PdfString.cpp.
CVE-2017-8378 — Critical (CVSS 9.8): Heap-based buffer overflow in the PdfParser::ReadObjects function in base/PdfParser.cpp in PoDoFo 0.9.5 allows remote…
CVE-2015-8981 — Critical (CVSS 9.8): Heap-based buffer overflow in the PdfParser::ReadXRefSubsection function in base/PdfParser.cpp in PoDoFo allows…
CVE-2023-31568 — High (CVSS 8.8): Podofo v0.10.0 was discovered to contain a heap buffer overflow via the component PoDoFo::PdfEncryptRC4::PdfEncryptRC4.
CVE-2023-31567 — High (CVSS 8.8): Podofo v0.10.0 was discovered to contain a heap buffer overflow via the component…
CVE-2023-31566 — High (CVSS 8.8): Podofo v0.10.0 was discovered to contain a heap-use-after-free via the component…

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