CVE-2018-15443

mediumPriorität · verfolgen · 31EPSS 0.028 · 86. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.77% (86th) EPSS

CVSS 5 · medium

Is it mine?

7 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · bewertet 2026-10-27

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion Prevention System (IPS) rule that inspects certain types of TCP traffic. The vulnerability is due to incorrect TCP retransmission handling. An attacker could exploit this vulnerability by sending a crafted TCP connection request through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

BehobenCisco Secure Firewall Management Center (FMC)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.05.8mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · ENISA EU

v3.05.8mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · Cisco PSIRT US

v3.05.8mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.8mediumAV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

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

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-400USprimärCWE-400US

betroffene Produkte (7)

Betroffene Produkte und Versionsbereiche.

Cisco Cisco Secure Firewall Management Center (FMC)alle Versionencisco_csafUS
Cisco Cisco Firepower Management Center≤ n/aenisa_euvdEU
Cisco Systems Inc. Firepower System Software≤ 6.2.3.3fstec_bduRU
Cisco Systems Inc. Firepower System Software≤ 6.2.2.4fstec_bduRU
Cisco Systems Inc. Firepower System Software≤ 6.2.0.6fstec_bduRU
Cisco Systems Inc. Firepower System Software≤ 6.1.0.6fstec_bduRU
cisco firepower system softwarealle VersionennvdUScpe:2.3:a:cisco:firepower_system_software:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-20181107-fde-tcp-bypassCisco Firepower Detection Engine TCP Intrusion Prevention System Rule Bypass Vulnerability2018-11-07csaf · cisco_csafUS
A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion Prevention System (IPS) rule that inspects certain types of TCP traffic. The vulnerability is due to incorrect TCP retransmission handling. An attacker could exploit this vulnerability by sending a crafted TCP connection request through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network. There are no workarounds that address this vulnerability.

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

veröffentlicht 2018-11-08geändert 2026-06-17

verwandt (9,612)

Verwandte Einträge.

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+9607 weitere

Referenzen (7)

Externe Belege — Patches, Meldungen, Analysen.

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