CVE-2020-10857
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted...
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted content, leading to remote code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted content, leading to remote code execution.
- Record
CVE-2020-10857- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted content, leading to remote code execution.
- Record
CVE-2020-10857- Updated
- 2026-11-02
EUVDEUVD-2020-3263 No score
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted content, leading to remote code execution.
- Record
EUVD-2020-3263- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7fjh-g2fp-mqf5 No score
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted...
Zulip Desktop before 5.0.0 improperly uses shell.openExternal and shell.openItem with untrusted content, leading to remote code execution.
- Record
GHSA-7fjh-g2fp-mqf5- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-10857 is a critical vulnerability (CVSS 9.8) in Zulip Desktop, published February 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.17%, the 88th percentile. No source names a fixed version.