CVE-2020-36024Public exploit

Application crash via null pointer dereference

Published Aug 11, 2023 · Updated Nov 3, 2025

NULL pointer dereference in Poppler 20.12.1 allows remote attackers to crash PDF-processing applications via a crafted PDF file. FoFiType1C::convertToType1 dereferences a null pointer while converting a malformed Type 1C font embedded in the document. A user or service must process the file; the documented consequence is an application crash without confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Poppler 20.12.1 allows remote attackers to crash PDF-processing applications via a crafted PDF file. FoFiType1C::convertToType1 dereferences a null pointer while converting a malformed Type 1C font embedded in the document. A user or service must process the file; the documented consequence is an application crash without confidentiality or integrity impact.

The record

CVE
CVE-2020-36024
Published
Aug 11, 2023
Updated
Nov 3, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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