VulnSocial

CVE-2026-20101Disclosure(cisco / adaptive_security_appliance_software)

LOWCVSS 8.6 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch cisco adaptive_security_appliance_software systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a DoS condition. This vulnerability is due to insufficient error checking when processing SAML messages. An attacker could exploit this vulnerability by sending crafted SAML messages to the SAML service. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-330

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • adaptive_security_appliance_software
  • secure_firewall_threat_defense

Threat summary

  • Patch or workaround signal is available
  • 6 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 5 signals
  • Disclosure: 4 classified signals
  • Peaked 1d ago at 4 mentions (2026-03-04); latest day: 2
  • 6 total mentions across 2 days

Affected systems

Vendors
cisco
Products
adaptive_security_appliance_softwaresecure_firewall_threat_defense

Deep dive

Activity timeline6 mentions / 2d
01234Mentions · 2026-03-04: 4Mentions · 2026-03-05: 2Patch / Workaround · 2026-03-04: 1Patch / Workaround · 2026-03-05: 1Technical Details · 2026-03-04: 4Technical Details · 2026-03-05: 103-0403-05
Signal classification2 categories
Disclosure
466.7%
Patch
233.3%
Referenced assets6 URLs
Classification over time
DateTotalLabels
2026-03-044
Disclosure3Patch1
2026-03-052
Disclosure1Patch1
Full discourse6 posts
  • RedPacket Security@RedPacketSec
    Disclosure

    CVE Alert: CVE-2026-20101 - Cisco - Cisco Secure Firewall Adaptive Security Appliance (ASA) Software - https://www.redpacketsecurity.com/cve-alert-cve-2026-20101-cisco-cisco-secure-firewall-adaptive-security-appliance-asa-software/ #OSINT #ThreatIntel #CyberSecurity #cve-2026-20101 #cisco #cisco-secure-firewall-adaptive-security-appliance-asa-software

    Post summary

    The tweet announces the existence of CVE-2026-20101 for Cisco ASA software but does not provide any technical details, PoCs, or exploitation evidence.

    00000151
    3.5K followersView on X
  • Fernando Karl@fernandokarl
    Patch

    🚨 Atenção, profissionais de segurança! A vulnerabilidade CVE-2026-20101 no Cisco Secure Firewall pode causar DoS crítico com SSO SAML. 🔒 Aplique patches urgentes e restrinja o acesso! Não deixe sua rede vulnerável. Leia mais: https://www.tenable.com/cve/CVE-2026-20101 #Cybersecurity #InfoSec

    Post summary

    The tweet informs security professionals about a critical DoS vulnerability in Cisco Secure Firewall (CVE‑2026‑20101) and urges immediate patching and access restriction.

    0000070
    254 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-20101 Cisco Secure Firewall ASA and FTD SAML 2.0 Denial of Service Vulnerability https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20101

    Post summary

    The post is a brief disclosure of CVE‑2026‑20101 with a link to a vulnerability details page, providing only the vulnerability type but no evidence of exploitation, patching, or PoC.

    0000069
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-20101 A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote atta… https://www.cve.org/CVERecord?id=CVE-2026-20101

    Post summary

    The CVE-2026-20101 vulnerability has been disclosed as affecting Cisco Secure Firewall ASA and Secure FTD SSO, enabling unauthenticated remote exploitation.

    00000124
    56.6K followersView on X
  • CVEFind.com@CveFindCom
    Patch

    [CVE-2026-20101: HIGH] Critical vulnerability alert! A flaw in Cisco Secure Firewall ASA & FTD Software's SAML 2.0 SSO feature could result in a DoS attack. Update now to stay secure. #cybersecurity#cve,CVE-2026-20101,#cybersecurity https://cvefind.com/CVE-2026-20101

    Post summary

    The post alerts about a high‑severity DoS vulnerability in Cisco Secure Firewall ASA & FTD SAML 2.0 SSO and urges users to apply an update; no PoC or active exploitation is reported.

    0000039
    595 followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🟠 CVE-2026-20101 - High A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device ... https://www.thehackerwire.com/vulnerability/CVE-2026-20101/ https://t.co/DxtUmSqIWU

    Post summary

    Disclosed a high‑severity SAML 2.0 SSO vulnerability in Cisco Secure Firewall ASA and FTD that permits unauthenticated remote attackers to disrupt the device, with no PoC, exploit, or patch information provided.

    0000046
    121 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
OSciscoadaptive_security_appliance_software---
Appciscosecure_firewall_threat_defense---

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