CVE-2009-3109 — Unspecified vulnerability in the AClient agent in Symantec Altiris Deployment Solution 6.9.x before 6.9 SP3 Build 430, when key-based authentication is being used between a deployment server and a client, allows remote attackers to bypass authentication and execute arbitrary commands as SYSTEM by spoofing the deployment server and sending "alternate commands" before the handshake is completed

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HIGH

Unspecified vulnerability in the AClient agent in Symantec Altiris Deployment Solution 6.9.x before 6.9 SP3 Build 430, when key-based authentication is being used between a deployment server and a client, allows remote attackers to bypass authentication and execute arbitrary commands as SYSTEM by spoofing the deployment server and sending "alternate commands" before the handshake is completed

Published Sep 8, 2009

9.3

HIGH

CVSS 2.0

EPSS 3.76%

Description

Unspecified vulnerability in the AClient agent in Symantec Altiris Deployment Solution 6.9.x before 6.9 SP3 Build 430, when key-based authentication is being used between a deployment server and a client, allows remote attackers to bypass authentication and execute arbitrary commands as SYSTEM by spoofing the deployment server and sending "alternate commands" before the handshake is completed.

Affected products

Remediation

No remediation recorded yet.

Metrics

3.76% 0.03763

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.03763

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	3.76% (0.03763)	89.56th	v5 (v2026.06.15)
Jun 15, 2026	3.76% (0.03763)	88.47th	v5 (v2026.06.15)
Mar 17, 2025	0.38% (0.00383)	57.51th	v4 (v2025.03.14)
Dec 12, 2024	0.14% (0.00142)	51.49th	v3 (v2023.03.01)
Jun 21, 2024	0.14% (0.00142)	50.21th	v3 (v2023.03.01)
Mar 7, 2023	0.14% (0.00142)	48.19th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (4)

http://secunia.com/advisories/36502
third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/bid/36112
vdb-entryx_refsource_BIDPatch
http://www.securitytracker.com/id?1022779
vdb-entryx_refsource_SECTRACK
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2009&suid=20090826_00
x_refsource_CONFIRM

Link	Providers	Tags
http://secunia.com/advisories/36502		third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/bid/36112		vdb-entryx_refsource_BIDPatch
http://www.securitytracker.com/id?1022779		vdb-entryx_refsource_SECTRACK
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2009&suid=20090826_00		x_refsource_CONFIRM

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Sep 8, 2009

Updated Aug 7, 2024

Reserved Sep 8, 2009

Link CVE-2009-3109

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2009-3109

Red Hat

Severity n/a

Public date n/a

Links CVE-2009-3109