CVE-2009-10006Public exploitNetwork attack vector

Remote code execution via oversized IRC welcome reply

Published Aug 22, 2025 · Updated May 15, 2026

Stack-based buffer overflow in UFO: Alien Invasion 2.2.1 and earlier allows remote attackers to execute arbitrary code via a crafted IRC 001 reply. The built-in IRC client parser processes an oversized numeric welcome response without validating its length, overflowing a stack buffer and corrupting control-flow data. Exploitation requires the game to be launched and its IRC client to connect to an attacker-controlled server; reply handling then needs no further interaction.

CVSS severity9.3
Critical
EPSS probability0.87%
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 UFO: Alien Invasion 2.2.1 and earlier allows remote attackers to execute arbitrary code via a crafted IRC 001 reply. The built-in IRC client parser processes an oversized numeric welcome response without validating its length, overflowing a stack buffer and corrupting control-flow data. Exploitation requires the game to be launched and its IRC client to connect to an attacker-controlled server; reply handling then needs no further interaction.

The record

CVE
CVE-2009-10006
Published
Aug 22, 2025
Updated
May 15, 2026
Vendor
UFO: Alien Invasion Project
Product
UFO: Alien Invasion
Classifications
CWE-121, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=2.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

UFO: Alien Invasion Project · UFO: Alien Invasionversion=0 <=2.2.1

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
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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