CVE-2022-44318Public exploit

Interpreter crash via unchecked StringStrcat concatenation

Published Nov 8, 2022 · Updated May 1, 2025

Heap buffer overflow in PicoC 3.2.2 allows local users to crash the interpreter by causing it to process a crafted C file. StringStrcat in cstdlib/string.c passes source and destination strings directly to strcat without checking the destination allocation, producing a 26-byte out-of-bounds heap write during ExpressionParseFunctionCall. Execution requires a user to run the crafted script locally, and the demonstrated consequence is interpreter termination rather than data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in PicoC 3.2.2 allows local users to crash the interpreter by causing it to process a crafted C file. StringStrcat in cstdlib/string.c passes source and destination strings directly to strcat without checking the destination allocation, producing a 26-byte out-of-bounds heap write during ExpressionParseFunctionCall. Execution requires a user to run the crafted script locally, and the demonstrated consequence is interpreter termination rather than data disclosure or modification.

The record

CVE
CVE-2022-44318
Published
Nov 8, 2022
Updated
May 1, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 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.

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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-787Out-of-bounds Write
T1204.002Malicious File

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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