How severe is CVE-2009-3278?

CVE-2009-3278 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2009-3278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3278?

CVE-2009-3278 primarily affects Qnap Ts-239 Pro Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3278?

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

When was CVE-2009-3278 published?

CVE-2009-3278 was published on 2009-09-21 and last updated on 2026-06-16.

CVE-2009-3278

CVE-2009-3278 is a medium-severity vulnerability in Qnap Ts-239 Pro Firmware with a CVSS 3.x base score of 5.5. 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-338.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.9
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-338
Affected product: Qnap Ts-239 Pro Firmware
Published: 2009-09-21
Last modified: 2026-06-16

Description

The QNAP TS-239 Pro and TS-639 Pro with firmware 2.1.7 0613, 3.1.0 0627, and 3.1.1 0815 use the rand library function to generate a certain recovery key, which makes it easier for local users to determine this key via a brute-force attack.

Frequently asked questions

What is CVE-2009-3278?: The QNAP TS-239 Pro and TS-639 Pro with firmware 2.1.7 0613, 3.1.0 0627, and 3.1.1 0815 use the rand library function to generate a certain recovery key, which makes it easier for local users to determine this key via a brute-force attack.
How severe is CVE-2009-3278?: CVE-2009-3278 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2009-3278 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3278?: CVE-2009-3278 primarily affects Qnap Ts-239 Pro Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3278?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3278 published?: CVE-2009-3278 was published on 2009-09-21 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:o:qnap:ts-239_pro_firmware:2.1.7:build0613:*:*:*:*:*:*
cpe:2.3:o:qnap:ts-239_pro_firmware:3.1.0:build0627:*:*:*:*:*:*
cpe:2.3:o:qnap:ts-239_pro_firmware:3.1.1:build0815:*:*:*:*:*:*
cpe:2.3:o:qnap:ts-639_pro_firmware:2.1.7:build0613:*:*:*:*:*:*
cpe:2.3:o:qnap:ts-639_pro_firmware:3.1.0:build0627:*:*:*:*:*:*
cpe:2.3:o:qnap:ts-639_pro_firmware:3.1.1:build0815:*:*:*:*:*:*

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