CVE-2026-20052

mediumPriorität · verfolgen · 0EPSS 0.004 · 38. PerzentilDEEUNLUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.44% (38th) EPSS
CVSS 5.8 · medium
Is it mine?
71 products
Prüfe deine Angriffsfläche
Who says so?
5 sources
cnnvd · enisa_euvd · cert_bund · cisco_csaf

EPSS · bewertet 2026-10-27

A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a logic error in memory management when a device is performing Snort 3 SSL packet inspection. An attacker could exploit this vulnerability by sending crafted SSL packets through an established connection to be parsed by the Snort 3 Detection Engine. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.0 when installed on Cisco Secure Firewall 4200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Firepower 1000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Firepower 2100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Firepower 4100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Firepower 9000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Secure Firewall 3100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Secure Firewall 4200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 1000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 2100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 4100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Firepower 9000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Secure Firewall 3100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Secure Firewall 4200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.1.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 1000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 2100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 4100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Firepower 9000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Secure Firewall 3100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Secure Firewall 4200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 1000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 2100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 4100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Firepower 9000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Secure Firewall 3100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Secure Firewall 4200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.4.2.1 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco 3000 Series Industrial Security Appliances (ISA)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Firepower 1000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Firepower 4100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Firepower 9000 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Secure Firewall 1200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Secure Firewall 3100 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Secure Firewall 4200 Seriescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Secure Firewall Threat Defense (FTD) Software 7.6.0 when installed on Cisco Secure Firewall Threat Defense Virtualcisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

5.8
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · ENISA EU
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 1.4
v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · NCSC-NL NL
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lsecondary · Cisco PSIRT US
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-788USCWE-788US
05

betroffene Produkte (71)

Betroffene Produkte und Versionsbereiche.

20 von 71 angezeigt
06

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2026-0077Kwetsbaarheden verholpen in Cisco Secure Firewall systemenNL2026-03-05csaf · ncsc_nlNL

    Cisco heeft meerdere kwetsbaarheden verholpen in Cisco Secure Firewall (inclusief ASA en FTD software).

  • WID-SEC-W-2026-0605Cisco Secure Firewall Threat Defense: Mehrere SchwachstellenDeutsch2026-03-04csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Cisco Secure Firewall Threat Defense ausnutzen, um einen Denial of Service Angriff durchzuführen, beliebigen Code mit Root-Rechten auszuführen und Sicherheitsmaßnahmen zu umgehen.

  • cisco-sa-ftd-snort3ssl-FBEKYXpHCisco Secure Firewall Threat Defense Software Snort 3 SSL Memory Management Denial of Service Vulnerability2026-03-04csaf · cisco_csafUS

    A vulnerability in the memory management handling for the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a logic error in memory management when a device is performing Snort 3 SSL packet inspection. An attacker could exploit this vulnerability by sending crafted SSL packets through an established connection to be parsed by the Snort 3 Detection Engine. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine unexpectedly restarts. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of the March 2026 release of the Cisco Secure Firewall ASA, Secure FMC, and Secure FTD Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2026 Semiannual Cisco Secure Firewall ASA, Secure FMC, and Secure FTD Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75736"].

07

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdcert_bundcisco_csafncsc_nlNVDCVE.orgMITRE
veröffentlicht 2026-03-04geändert 2026-08-20
09

Referenzen (4)

Externe Belege — Patches, Meldungen, Analysen.

scry

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