The QNAP TS-239 Pro and TS-639 Pro with firmware 2.1.7 0613, 3.1.0 0627, and 3.1.1 0815 create an undocumented recovery key and store it in the ENCK variable in flash memory, which allows local users to bypass the passphrase requirement and decrypt the hard drive by reading this variable, deobfuscating the key, and running a cryptsetup luksOpen command
Published Sep 21, 2009
5.9
MEDIUMCVSS 2.0
EPSS 0.40%
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 create an undocumented recovery key and store it in the ENCK variable in flash memory, which allows local users to bypass the passphrase requirement and decrypt the hard drive by reading this variable, deobfuscating the key, and running a cryptsetup luksOpen command.
Affected products
No data.
- 2.1.7_0613
- 3.1.0_0627
- 3.1.1_0815
- 2.1.7_0613
- 3.1.0_0627
- 3.1.1_0815
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.40% (0.00404) | 32.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00404) | 31.95th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00066) | 17.78th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
References (8)
- http://forum.qnap.com/viewtopic.php?f=11&t=11214&start=20#p63346 x_refsource_MISC
- http://forum.qnap.com/viewtopic.php?f=12&t=12104&start=10#p63341 x_refsource_MISC
- http://secunia.com/advisories/36793 third-party-advisoryx_refsource_SECUNIA
- http://www.baseline-security.de/downloads/BSC-Qnap_Crypto_Backdoor-CVE-2009-3200.txt x_refsource_MISCExploit
- http://www.securityfocus.com/archive/1/506607/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/36467 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1022916 vdb-entryx_refsource_SECTRACK
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53391 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://forum.qnap.com/viewtopic.php?f=11&t=11214&start=20#p63346 | x_refsource_MISC | |
| http://forum.qnap.com/viewtopic.php?f=12&t=12104&start=10#p63341 | x_refsource_MISC | |
| http://secunia.com/advisories/36793 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.baseline-security.de/downloads/BSC-Qnap_Crypto_Backdoor-CVE-2009-3200.txt | x_refsource_MISCExploit | |
| http://www.securityfocus.com/archive/1/506607/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/36467 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1022916 | vdb-entryx_refsource_SECTRACK | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/53391 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.