CVE-2022-43295

Application crash via FileStream copy stack overflow

Published Nov 14, 2022 · Updated May 13, 2025

Stack overflow in FileStream::copy in Xpdf 4.04 allows local users to crash the application by opening a crafted PDF file. The flaw is localized to xpdf/Stream.cc line 795, but public records do not disclose which copy operation mishandles the input. Exploitation requires Xpdf or an included command-line utility to process attacker-supplied PDF content, and the published impact is limited to an application crash.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in FileStream::copy in Xpdf 4.04 allows local users to crash the application by opening a crafted PDF file. The flaw is localized to xpdf/Stream.cc line 795, but public records do not disclose which copy operation mishandles the input. Exploitation requires Xpdf or an included command-line utility to process attacker-supplied PDF content, and the published impact is limited to an application crash.

The record

CVE
CVE-2022-43295
Published
Nov 14, 2022
Updated
May 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, CWE-787, T1204.002, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2022CVE publishedPublication date reported by the CVE source.
  2. May 13, 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
5.5CISA-ADPCVSS: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1204.002Malicious File
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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