CVE-2016-20037Public exploit

Local code execution via oversized command-line argument

Published Mar 28, 2026 · Updated Mar 28, 2026

Stack-based buffer overflow in Identical Software xwpe 1.5.30a-2.1 and earlier allows local users to execute code via a long argument. The command-line argument path accepts user-supplied strings beyond the stack buffer boundary, allowing saved EIP to be overwritten after 262 bytes. Local access is required, and successful exploitation runs code in the application user context; failed attempts crash the editor.

CVSS severity8.6
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Identical Software xwpe 1.5.30a-2.1 and earlier allows local users to execute code via a long argument. The command-line argument path accepts user-supplied strings beyond the stack buffer boundary, allowing saved EIP to be overwritten after 262 bytes. Local access is required, and successful exploitation runs code in the application user context; failed attempts crash the editor.

The record

CVE
CVE-2016-20037
Published
Mar 28, 2026
Updated
Mar 28, 2026
Vendor
Identical Software
Product
xwpe
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.5.30a-2.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Identical Software · xwpeversion=1.5.30a-2.1

Published CVSS scores

8.6VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.4VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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