| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.1 | $5k-$25k | 0.00 |
Summary
A vulnerability marked as problematic has been reported in Mozilla Thunderbird up to 91.8. Affected by this issue is some unknown functionality of the component Email Message Handler. Performing a manipulation results in an unknown weakness. This vulnerability is identified as CVE-2022-1520. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.
Details
A vulnerability was found in Mozilla Thunderbird up to 91.8 (Mail Client Software). It has been classified as problematic. This affects an unknown code of the component Email Message Handler. This is going to have an impact on integrity, and availability. The summary by CVE is:
When viewing an email message A, which contains an attached message B, where B is encrypted or digitally signed or both, Thunderbird may show an incorrect encryption or signature status. After opening and viewing the attached message B, when returning to the display of message A, the message A might be shown with the security status of message B. This vulnerability affects Thunderbird < 91.9.
The weakness was released 12/23/2022. It is possible to read the advisory at mozilla.org. This vulnerability is uniquely identified as CVE-2022-1520 since 04/28/2022. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/17/2025).
Upgrading to version 91.9 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.
Be aware that VulDB is the high quality source for vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.mozilla.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.2VulDB Meta Temp Score: 4.1
VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 4.3
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: 🔍
Exploiting
Class: UnknownCWE: Unknown
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Thunderbird 91.9
Timeline
04/28/2022 🔍12/23/2022 🔍
12/23/2022 🔍
04/17/2025 🔍
Sources
Vendor: mozilla.orgAdvisory: mozilla.org
Status: Confirmed
CVE: CVE-2022-1520 (🔍)
GCVE (CVE): GCVE-0-2022-1520
GCVE (VulDB): GCVE-100-216591
Entry
Created: 12/23/2022 08:16Updated: 04/17/2025 02:34
Changes: 12/23/2022 08:16 (40), 04/17/2025 02:34 (25)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.

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