| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 8.5 | $0-$5k | 0.00 |
Summary
A vulnerability was found in SonicWall SSLVPN SMA100 10.x. It has been classified as critical. This issue affects some unknown processing. This manipulation causes sql injection. This vulnerability is registered as CVE-2021-20016. Remote exploitation of the attack is possible. Furthermore, an exploit is available.
Details
A vulnerability has been found in SonicWall SSLVPN SMA100 10.x (Firewall Software) and classified as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was published 02/04/2021 as SNWLID-2021-0001. It is possible to read the advisory at psirt.global.sonicwall.com. This vulnerability is known as CVE-2021-20016. Technical details are unknown but a private exploit is available. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.
It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 11/17/2021:
Apply updates per vendor instructions.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at Zero-Day.cz (599). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.5VulDB Meta Temp Score: 8.5
VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Sql injectionCWE: CWE-89 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Access: Private
Status: Attacked
EPSS Score: 🔍
EPSS Percentile: 🔍
KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Zero-Day.cz: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
12/17/2020 🔍02/04/2021 🔍
02/04/2021 🔍
02/06/2025 🔍
Sources
Advisory: SNWLID-2021-0001Status: Confirmed
Confirmation: 🔍
CVE: CVE-2021-20016 (🔍)
GCVE (CVE): GCVE-0-2021-20016
GCVE (VulDB): GCVE-100-169195
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/04/2021 18:50Updated: 02/06/2025 21:53
Changes: 02/04/2021 18:50 (36), 02/05/2021 13:06 (7), 02/23/2021 14:55 (3), 04/21/2024 08:13 (28), 06/30/2024 17:40 (2), 09/11/2024 23:15 (1), 02/06/2025 21:53 (19)
Complete: 🔍
Cache ID: 216::103
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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