Cisco Packet Tracer for Windows DLL Injection Vulnerability
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-427.
Summary
A vulnerability in Cisco Packet Tracer for Windows could allow an authenticated, local attacker to perform a DLL injection attack on an affected device. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. This vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path on the system, which can cause a malicious DLL file to be loaded when the application starts. A successful exploit could allow an attacker with normal user privileges to execute arbitrary code on the affected system with the privileges of another user’s account.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Packet Tracer | all versions | — | No fix listed | CNA |
- Cisco Packet Tracer VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:packet_tracer:7.2.0:*:*:*:*:*:*:* | 7.2.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:packet_tracer:7.2.1:*:*:*:*:*:*:* | 7.2.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:packet_tracer:7.2.2:*:*:*:*:*:*:* | 7.2.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:packet_tracer:7.3.0:*:*:*:*:*:*:* | 7.3.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:packet_tracer:7.3.1:*:*:*:*:*:*:* | 7.3.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:packet_tracer:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:packet_tracer:7.2.0:*:*:*:*:*:*:* Versions 7.2.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:packet_tracer:7.2.1:*:*:*:*:*:*:* Versions 7.2.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:packet_tracer:7.2.2:*:*:*:*:*:*:* Versions 7.2.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:packet_tracer:7.3.0:*:*:*:*:*:*:* Versions 7.3.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:packet_tracer:7.3.1:*:*:*:*:*:*:* Versions 7.3.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:packet_tracer:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-1593
- 2026-10-03 Alias added: GHSA-hrcm-7659-jp84
References
More Cisco Packet Tracer vulnerabilities
- TI-2010-02996 Untrusted search path vulnerability in Cisco Packet Tracer 5.2 allows local users, and… CVSS 2.0HIGH 9.3
- TI-2017-09089 Uncontrolled search path in Cisco Network Academy Packet Tracer CVSS 3.0MEDIUM 6.7
Sources
- CVE-2021-1593 · CVE Program
- CVE-2021-1593 · NVD
- FIRST EPSS
- GHSA-hrcm-7659-jp84 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences