CVE-2020-9549Public exploit

Code execution via unterminated type-name buffer

Published Mar 2, 2020 · Updated Aug 4, 2024

Out-of-bounds write in PDFResurrect 0.12 through 0.19 allows local users to crash the process or execute code via a crafted PDF. In get_type in pdf.c, memcpy can fill the 32-byte static type-name buffer without a terminator, and the following delimiter scan writes a null byte beyond it. PDFResurrect must generate a summary of the crafted document; successful code runs with the invoking user's privileges.

CVSS severity7.8
High
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in PDFResurrect 0.12 through 0.19 allows local users to crash the process or execute code via a crafted PDF. In get_type in pdf.c, memcpy can fill the 32-byte static type-name buffer without a terminator, and the following delimiter scan writes a null byte beyond it. PDFResurrect must generate a summary of the crafted document; successful code runs with the invoking user's privileges.

The record

CVE
CVE-2020-9549
Published
Mar 2, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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

6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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