CVE-2026-20349
Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability
Beskrivelse
A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient error checking when processing HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the Remote Access SSL VPN service on an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Beskrivelsen gjengis slik kilden har publisert den, på engelsk.
Nøkkelfakta
- Publisert
- 2026-08-11
- Sist endret
- 2026-09-16
- Tildelt av
- psirt@cisco.com
- CVSS-vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H- Scoret av
- psirt@cisco.com
- Rettelse finnes
- Ikke registrert hos kildene
Aktivt utnyttet
CISA førte denne sårbarheten inn i katalogen over kjente utnyttede sårbarheter 2026-08-11, med utbedringsfrist 2026-08-14 for amerikanske føderale etater.
Pålagt tiltak: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Berørte produkter
| Leverandør | Produkt | Versjoner | Status |
|---|---|---|---|
| Cisco | Adaptive Security Appliance Software | 9.16.1 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.1.28 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.2 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.2.11 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.2.13 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.2.14 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.2.3 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.2.7 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.3 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.3.14 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.3.15 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.3.19 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.3.23 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.3.3 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.14 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.19 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.27 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.38 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.39 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.42 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.48 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.55 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.57 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.61 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.62 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.67 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.70 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.71 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.76 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.82 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.84 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.85 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.89 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.9 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.16.4.92 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.1 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.1.3 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.2 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.2.5 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.2.7 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.2.8 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.3 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.3.39 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.3.46 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.3.53 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.3.55 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.3.56 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.135 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.22 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.24 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.29 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.34 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.40 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.47 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.5 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.50 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.52 | Berørt |
| Cisco | Adaptive Security Appliance Software | 9.18.4.53 | Berørt |
Svakhetstype
-
CWE-244: Improper Clearing of Heap Memory Before Release ('Heap Inspection')
Using realloc() to resize buffers that store sensitive information can leave the sensitive information exposed to attack, because it is not removed from memory.
Referanser
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-as…
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20349
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