How severe is CVE-2009-0742?

CVE-2009-0742 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-0742 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0742?

CVE-2009-0742 primarily affects Cisco Application Control Engine Module. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0742?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-0742 published?

CVE-2009-0742 was published on 2009-02-26 and last updated on 2026-06-16.

CVE-2009-0742

CVE-2009-0742 is a high-severity vulnerability in Cisco Application Control Engine Module with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-310.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Cisco Application Control Engine Module
Published: 2009-02-26
Last modified: 2026-06-16

Description

The username command in Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers and Cisco ACE 4710 Application Control Engine Appliance stores a cleartext password by default, which allows context-dependent attackers to obtain sensitive information.

Frequently asked questions

What is CVE-2009-0742?: The username command in Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers and Cisco ACE 4710 Application Control Engine Appliance stores a cleartext password by default, which allows context-dependent attackers to obtain sensitive information.
How severe is CVE-2009-0742?: CVE-2009-0742 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-0742 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0742?: CVE-2009-0742 primarily affects Cisco Application Control Engine Module. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0742?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-0742 published?: CVE-2009-0742 was published on 2009-02-26 and last updated on 2026-06-16.

References

http://www.cisco.com/en/US/products/products_security_advisory09186a0080a7bc82.shtml

Affected products (2)

cpe:2.3:h:cisco:application_control_engine_module:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ace_4710:*:*:*:*:*:*:*:*

More vulnerabilities in Cisco Application Control Engine Module

CVE-2009-0620 — Critical (CVSS 10.0): Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers before A2(1.1) uses default (1)…
CVE-2009-0622 — Critical (CVSS 9.0): Unspecified vulnerability in Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers…
CVE-2009-0625 — High (CVSS 7.8): Unspecified vulnerability in Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers…
CVE-2009-0623 — High (CVSS 7.8): Unspecified vulnerability in Cisco ACE Application Control Engine Module for Catalyst 6500 Switches and 7600 Routers…
CVE-2009-0624 — Medium (CVSS 6.8): Unspecified vulnerability in the SNMPv2c implementation in Cisco ACE Application Control Engine Module for Catalyst…
CVE-2012-3919 — Medium (CVSS 5.0): The Cisco Application Control Engine (ACE) module 3.0 for Cisco Catalyst switches and Cisco routers does not properly…

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