CVE-2009-3200
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…
- 5.9MediumCVSS base score
- 0.40%Exploitation in 30 daysEPSS · top 65% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
- 6 days later
· 6 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.9 | AV:L/AC:M/Au:N/C:C/I:P/A:P |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
n/a
- affected n/a
References
References8
- http://www.baseline-security.de/downloads/BSC-Qnap_Crypto_Backdoor-CVE-2009-3200.txt (opens in a new tab)x_refsource_MISCx_transferred
- 36793 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://forum.qnap.com/viewtopic.php?f=12&t=12104&start=10#p63341 (opens in a new tab)x_refsource_MISCx_transferred
- http://forum.qnap.com/viewtopic.php?f=11&t=11214&start=20#p63346 (opens in a new tab)x_refsource_MISCx_transferred
- qnap-backupkey-weak-security(53391) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 20090918 Advisory: Crypto backdoor in Qnap storage devices (CVE-2009-3200) (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 36467 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1022916 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-3183 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3200)Record last updated .