How severe is CVE-2008-4540?

CVE-2008-4540 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2008-4540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4540?

CVE-2008-4540 affects Microsoft Windows Mobile. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4540?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-4540 published?

CVE-2008-4540 was published on 2008-10-13 and last updated on 2026-06-16.

CVE-2008-4540

CVE-2008-4540 is a low-severity vulnerability in Microsoft Windows Mobile with a CVSS 2.0 base score of 2.1. 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-255.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Microsoft Windows Mobile
Published: 2008-10-13
Last modified: 2026-06-16

Description

Windows Mobile 6 on the HTC Hermes device makes WLAN passwords available to an auto-completion mechanism for the password input field, which allows physically proximate attackers to bypass password authentication and obtain WLAN access.

Frequently asked questions

What is CVE-2008-4540?: Windows Mobile 6 on the HTC Hermes device makes WLAN passwords available to an auto-completion mechanism for the password input field, which allows physically proximate attackers to bypass password authentication and obtain WLAN access.
How severe is CVE-2008-4540?: CVE-2008-4540 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2008-4540 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4540?: CVE-2008-4540 affects Microsoft Windows Mobile. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4540?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4540 published?: CVE-2008-4540 was published on 2008-10-13 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:microsoft:windows_mobile:6.0:*:*:*:*:*:*:*

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