9.0Critical
KEV
Used in ransomware
CVE-2021-35211Serv-U Remote Memory Escape Vulnerability
Known exploited — SolarWinds Serv-U Remote Code Execution Vulnerability
CISA confirmed this vulnerability is used in real attacks on 03.11.2021. Remediation deadline for US federal agencies: 17.11.2021.
Required action: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-35211
Description
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.
Weakness (CWE):
CWE-787
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| solarwinds | serv-u | < 15.2.3 | |
| SolarWinds | Serv-U Managed File Transfer Server and Serv-U Secured FTP | SolarWinds Serv-U – < 15.2.3 HF1 |
References and patches
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211 PatchVendor Advisory
- https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv… PatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211 US Government Resource
CPE matches (NVD) (3)
cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*< 15.2.3cpe:2.3:a:solarwinds:serv-u:15.2.3:-:*:*:*:*:*:*cpe:2.3:a:solarwinds:serv-u:15.2.3:hotfix1:*:*:*:*:*:*