Memory leak in Cisco AsyncOS through 8.8 on Web Security Appliance (WSA) devices allows…
Priority LOW 36CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Memory leak in Cisco AsyncOS through 8.8 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via an unspecified HTTP status code, aka Bug ID CSCur28305.
Why it matters now
EPSS 0.01389 72nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 28
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:web_security_appliance:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):5.6.0-623:*:*:*:*:*:*:* | 5.6.0-623 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):6.0.0-000:*:*:*:*:*:*:* | 6.0.0-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.0:*:*:*:*:*:*:* | 7.1.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.1:*:*:*:*:*:*:* | 7.1.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.2:*:*:*:*:*:*:* | 7.1.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.3:*:*:*:*:*:*:* | 7.1.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.4:*:*:*:*:*:*:* | 7.1.4 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.0-000:*:*:*:*:*:*:* | 7.5.0-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.0-825:*:*:*:*:*:*:* | 7.5.0-825 | Vulnerable | Cisco |
- cpe:2.3:h:cisco:web_security_appliance:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):5.6.0-623:*:*:*:*:*:*:* Versions 5.6.0-623 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):6.0.0-000:*:*:*:*:*:*:* Versions 6.0.0-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.0:*:*:*:*:*:*:* Versions 7.1.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.1:*:*:*:*:*:*:* Versions 7.1.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.2:*:*:*:*:*:*:* Versions 7.1.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.3:*:*:*:*:*:*:* Versions 7.1.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.1.4:*:*:*:*:*:*:* Versions 7.1.4 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.0-000:*:*:*:*:*:*:* Versions 7.5.0-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.0-825:*:*:*:*:*:*:* Versions 7.5.0-825 Vulnerable ·Cisco
Show 18 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.1-000:*:*:*:*:*:*:* | 7.5.1-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.2-000:*:*:*:*:*:*:* | 7.5.2-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.7.0-000:*:*:*:*:*:*:* | 7.7.0-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.7.1-000:*:*:*:*:*:*:* | 7.7.1-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.0-000:*:*:*:*:*:*:* | 8.0.0-000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.5:*:*:*:*:*:*:* | 8.0.5 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.6:*:*:*:*:*:*:* | 8.0.6 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.6-078:*:*:*:*:*:*:* | 8.0.6-078 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.6-119:*:*:*:*:*:*:* | 8.0.6-119 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.7:*:*:*:*:*:*:* | 8.0.7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.7-142:*:*:*:*:*:*:* | 8.0.7-142 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.8-mr-113:*:*:*:*:*:*:* | 8.0.8-mr-113 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.0-497:*:*:*:*:*:*:* | 8.5.0-497 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.0.000:*:*:*:*:*:*:* | 8.5.0.000 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.1-021:*:*:*:*:*:*:* | 8.5.1-021 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.2-024:*:*:*:*:*:*:* | 8.5.2-024 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.2-027:*:*:*:*:*:*:* | 8.5.2-027 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.3-055:*:*:*:*:*:*:* | 8.5.3-055 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.1-000:*:*:*:*:*:*:* Versions 7.5.1-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.5.2-000:*:*:*:*:*:*:* Versions 7.5.2-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.7.0-000:*:*:*:*:*:*:* Versions 7.7.0-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):7.7.1-000:*:*:*:*:*:*:* Versions 7.7.1-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.0-000:*:*:*:*:*:*:* Versions 8.0.0-000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.5:*:*:*:*:*:*:* Versions 8.0.5 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.6:*:*:*:*:*:*:* Versions 8.0.6 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.6-078:*:*:*:*:*:*:* Versions 8.0.6-078 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.6-119:*:*:*:*:*:*:* Versions 8.0.6-119 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.7:*:*:*:*:*:*:* Versions 8.0.7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.7-142:*:*:*:*:*:*:* Versions 8.0.7-142 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.0.8-mr-113:*:*:*:*:*:*:* Versions 8.0.8-mr-113 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.0-497:*:*:*:*:*:*:* Versions 8.5.0-497 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.0.000:*:*:*:*:*:*:* Versions 8.5.0.000 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.1-021:*:*:*:*:*:*:* Versions 8.5.1-021 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.2-024:*:*:*:*:*:*:* Versions 8.5.2-024 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.2-027:*:*:*:*:*:*:* Versions 8.5.2-027 Vulnerable ·Cisco
- cpe:2.3:a:cisco:web_security_appliance_\(wsa\):8.5.3-055:*:*:*:*:*:*:* Versions 8.5.3-055 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-1383
- 2026-10-03 Alias added: GHSA-xqf6-m6vx-v7jx
References
More Cisco Web Security Appliance (wsa) vulnerabilities
- TI-2016-01273 Cisco AsyncOS before 8.5.3-069 and 8.6 through 8.8 on Web Security Appliance (WSA)… CVSS 3.0HIGH 7.5
Sources
- CVE-2016-1383 · CVE Program
- CVE-2016-1383 · NVD
- FIRST EPSS
- GHSA-xqf6-m6vx-v7jx · 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