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Multiple Vulnerabilities in Cisco Secure Firewall Products

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: CRITICAL

Software Affected

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software

Cisco Secure Firewall Threat Defense (FTD) Software

Cisco Secure Firewall Management Center (FMC)

Overview

Multiple vulnerabilities have been reported in Cisco Secure Firewall products, which could allow a remote attacker to execute arbitrary commands, gain elevated privileges, bypass authentication or session controls, access sensitive information, or cause denial of service (DoS) conditions on the affected system.

Target Audience:

All IT administrators and organizations using Cisco Secure Firewall products.

Risk Assessment:

High risk of unauthorized access, arbitrary command execution and privilege escalation.

Impact Assessment:

Potential for complete system compromise and disclosure of sensitive information.

Description

Cisco Secure Firewall products provide network security capabilities including firewalling, VPN, threat prevention, application control, and centralized management.

Multiple vulnerabilities exist in Cisco Secure Firewall products due to improper handling of exceptional conditions, improper access control, incorrect initialization of encryption parameters, unsecured deserialization of untrusted data, improper input validation and other security weaknesses. An attacker could exploit these vulnerabilities by sending specially crafted packets, requests, HTTP payloads, sftunnel remote procedure calls (RPCs), serialized data or session tokens, depending on the affected vulnerability.

Successful exploitation of these vulnerabilities could allow a remote attacker to execute arbitrary commands, gain elevated privileges, bypass authentication or session controls, access sensitive information, or cause denial of service (DoS) conditions on the affected system.

Note: Two of the reported vulnerabilities are known to be exploited in wild.

Solution

Apply appropriate updates as mentioned as mentioned by the Vendor:

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-asaftdfmc-uvpPROhN

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc2-multivulns-HXgcqRG

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-sftunn-codex-c3O4Jft2

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-mulivulns-4PsnFwvx

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-javarce-y2NypXwk

Vendor Information

Cisco

https://sec.cloudapps.cisco.com/security/center/publicationListing.x

References

 

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-asaftdfmc-uvpPROhN

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc2-multivulns-HXgcqRG

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-sftunn-codex-c3O4Jft2

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-mulivulns-4PsnFwvx

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-javarce-y2NypXwk

CVE Name

CVE-2026-20242

CVE-2026-20324

CVE-2026-20329

CVE-2026-20330

CVE-2026-20331

CVE-2026-20332

CVE-2026-20333

CVE-2026-20334

CVE-2026-20335

CVE-2026-20336

CVE-2026-20340

CVE-2026-20341

CVE-2026-20342

CVE-2026-20343

CVE-2026-20344

CVE-2026-76412

CVE-2026-76413

CVE-2026-76420

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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