Security readout for executives and security teams
Plain-English summary
Pulse Connect Secure before 9.1R12 had a command injection flaw in an administrative web parameter. An authenticated administrator could potentially cause the appliance to run unintended commands. The supplied sources do not provide CVSS scoring or evidence of active exploitation.
Executive priority
Treat this as a priority for any legacy Pulse Connect Secure deployment. The flaw requires admin access, but VPN appliances are high-value infrastructure, and command injection can materially increase breach impact.
Technical view
CVE-2021-22935 is CWE-77 command injection affecting Pulse Connect Secure versions before 9.1R12. The described attack path requires authenticated administrator access and involves an unsanitized web parameter. The public bundle identifies 9.1R12 as the fixed release but provides limited technical detail.
Likely exposure
Exposure is likely limited to organizations running Pulse Connect Secure before 9.1R12, especially where administrative access is reachable by many admins or from broad networks.
Exploitation context
The supplied bundle says KEV is false and includes no cited source showing active exploitation. The requirement for authenticated administrator access narrows the attacker set but does not remove risk if admin credentials are compromised.
Researcher notes
Key missing evidence includes CVSS metrics, detailed affected version ranges beyond before 9.1R12, and exploit telemetry. Avoid assuming broader Ivanti or Pulse product impact from this bundle alone.
Mitigation direction
- Upgrade Pulse Connect Secure to 9.1R12 or later.
- Review Pulse Secure advisory SA44858 for vendor-specific remediation guidance.
- Limit administrative interface access to trusted networks and administrators.
- Review administrator accounts and remove unnecessary privileges.
Validation and detection
- Inventory Pulse Connect Secure appliances and record exact versions.
- Confirm each appliance is running 9.1R12 or later.
- Check vulnerability management records for CVE-2021-22935 closure.
- Review administrative logs for unusual privileged activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-22935 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44858/?kA23Z000000L6oySACCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.