CVE-2021-26758
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows...
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
- Record
CVE-2021-26758- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-269
- Updated
- 2026-11-02
CVE List No score
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
- Record
CVE-2021-26758- Updated
- 2026-11-02
EUVDEUVD-2021-13545 No score
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
- Record
EUVD-2021-13545- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9f37-v7ww-2cmh No score
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows...
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
- Record
GHSA-9f37-v7ww-2cmh- Weakness
- CWE-269
- Updated
- 2026-11-02
OSV
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.
- Record
CVE-2021-26758- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26758 is a high vulnerability (CVSS 8.8) in Litespeedtech Openlitespeed, published April 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.71%, the 86th percentile. No source names a fixed version.