CVE-2026-20011

mediumPriorität · verfolgen · 23EPSS 0.005 · 44. PerzentilNLUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.53% (44th) EPSS
CVSS 5.8 · medium
Is it mine?
643 products
Prüfe deine Angriffsfläche
Who says so?
2 sources
cisco_csaf · ncsc_nl

EPSS · bewertet 2026-10-27

Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. 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.

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:Lprimary · 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-805USCWE-805USCWE-805US
05

betroffene Produkte (643)

Betroffene Produkte und Versionsbereiche.

20 von 643 angezeigt
06

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2026-0450Kwetsbaarheden verholpen in Snort 3 van CiscoNL2026-10-22csaf · ncsc_nlNL

    Cisco heeft meerdere kwetsbaarheden verholpen in Snort 3, het open source intrusion detection en prevention systeem dat in diverse Cisco-producten wordt gebruikt.

  • cisco-sa-snort3-mime-vulns-bkXjcKktMultiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability2026-10-21csaf · cisco_csafUS

    Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed. An attacker could exploit this vulnerability by sending crafted SMTP packets through an established connection to be parsed by Snort 3. 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 a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of October 21, 2026, Security Advisories ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-notice-QGwHnJ6k"]. In addition, for further documentation of improvements and fixes in Snort 3, see Multiple Cisco Products Snort 3 Security Hardening Release: October 2026 ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-snort3-ybgmhTQe"].

07

quellen

Welche Quellen diesen Datensatz belegen und wann.

cisco_csafncsc_nlNVDCVE.orgMITRE
veröffentlicht 2026-10-21geändert 2026-10-22
08

Referenzen (1) nvd

Externe Belege — Patches, Meldungen, Analysen.

scry

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