CVE-2020-2505
Sensitive information via generation of error messages vulnerability in QES
If exploited, this vulnerability could allow attackers to gain sensitive information via generation of error messages. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Sensitive information via generation of error messages vulnerability in QES
If exploited, this vulnerability could allow attackers to gain sensitive information via generation of error messages. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
- Record
CVE-2020-2505- CVSS 3.1
- 2.3 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209, CWE-755
- Updated
- 2026-11-02
EUVDEUVD-2020-22298
If exploited, this vulnerability could allow attackers to gain sensitive information via generation of error messages. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
- Record
EUVD-2020-22298- CVSS 3.1
- 2.3 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5g2x-gm3x-pm24 No score
If exploited, this vulnerability could allow attackers to gain sensitive information via...
If exploited, this vulnerability could allow attackers to gain sensitive information via generation of error messages. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
- Record
GHSA-5g2x-gm3x-pm24- Weakness
- CWE-209
- Updated
- 2026-11-02
NVD
If exploited, this vulnerability could allow attackers to gain sensitive information via generation of error messages. QNAP has already fixed these issues in QES 2.1.1 Build 20201006 and later.
- Record
CVE-2020-2505- CVSS 3.1
- 2.3 Low
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-209, CWE-755
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-2505 is a low vulnerability (CVSS 2.3) in Qnap Qes, published December 24, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd percentile. No source names a fixed version.