AEGLIX vulnerability intelligence
CVE-2021-35211
CRITICAL · CVSS 9.0 · Analyzed
Published: 2021-07-14 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability.
Severity and scoring
- CVSS score
- 9.0 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-787
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- SolarWinds · Serv-U
- Added to catalog
- 2021-11-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2021-11-17
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*
Before (exclusive): 15.2.3
cpe:2.3:a:solarwinds:serv-u:15.2.3:-:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u:15.2.3:hotfix1:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit
Patch · Vendor Advisory
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211
Patch · Vendor Advisory
- https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit
Patch · Vendor Advisory
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211
Patch · Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211
US Government Resource