| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.4 | $0-$5k | 0.00 |
Summary
A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 89.x. Affected is an unknown function of the component ANGLE. Executing a manipulation can lead to out-of-bounds write. The identification of this vulnerability is CVE-2021-30547. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.
Details
A vulnerability has been found in Mozilla Firefox up to 89.x (Web Browser) and classified as critical. This vulnerability affects some unknown functionality of the component ANGLE. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was shared 07/13/2021. The advisory is available at mozilla.org. This vulnerability was named CVE-2021-30547. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/13/2024).
The vulnerability scanner Nessus provides a plugin with the ID 208618 (CentOS 7 : thunderbird (RHSA-2021:2881)), which helps to determine the existence of the flaw in a target environment.
Upgrading to version 90.0 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.
The vulnerability is also documented in the vulnerability database at Tenable (208618). If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.mozilla.org/
- Product: https://www.mozilla.org/en-US/firefox/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.6VulDB Meta Temp Score: 7.4
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
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: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 208618
Nessus Name: CentOS 7 : thunderbird (RHSA-2021:2881)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Firefox 90.0
Timeline
04/13/2021 🔍07/13/2021 🔍
07/13/2021 🔍
05/03/2025 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: mozilla.org
Status: Confirmed
CVE: CVE-2021-30547 (🔍)
GCVE (CVE): GCVE-0-2021-30547
GCVE (VulDB): GCVE-100-178474
Entry
Created: 07/13/2021 22:01Updated: 05/03/2025 16:53
Changes: 07/13/2021 22:01 (41), 07/16/2021 14:38 (5), 07/16/2021 14:40 (18), 10/13/2024 08:50 (17), 05/03/2025 16:53 (3)
Complete: 🔍
Cache ID: 216::103
If you want to get best quality of vulnerability data, you may have to visit VulDB.

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