CVE-2019-1886

mediumPriorität · verfolgen · 34EPSS 0.013 · 71. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.35% (71st) EPSS

CVSS 5 · medium

Is it mine?

9 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 HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Secure Sockets Layer (SSL) server certificates. An attacker could exploit this vulnerability by installing a malformed certificate in a web server and sending a request to it through the Cisco WSA. A successful exploit could allow the attacker to cause an unexpected restart of the proxy process on an affected device.

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

BehobenCisco Web Security Appliance (WSA)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

8.6

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–8.6

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

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 4

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · ENISA EU

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 4

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · Cisco PSIRT US

v3.18.6highAV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.9highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

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

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-295USprimärCWE-20USCWE-20US

betroffene Produkte (9)

Betroffene Produkte und Versionsbereiche.

Cisco Cisco Web Security Appliance (WSA)alle Versionencisco_csafUS
Cisco Cisco Web Security Appliance (WSA)unspecified → 10.5.5-005enisa_euvdEU
Cisco Systems Inc. Cisco Web Security Appliance≤ 11.7.0-FCS-334fstec_bduRU
Cisco Systems Inc. Cisco Web Security Appliance≤ 10.5.2-072fstec_bduRU
cisco asyncos10.5 → 10.5.5-005nvdUScpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*
cisco asyncos11.5 → 11.5.2-020nvdUScpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*
cisco web security appliance= 10.5.2-072nvdUScpe:2.3:a:cisco:web_security_appliance:*:*:*:*:*:*:*:*
cisco web security appliance= 10.5.3-025nvdUScpe:2.3:a:cisco:web_security_appliance:*:*:*:*:*:*:*:*
cisco web security appliance= 11.7.0-fcs-334nvdUScpe:2.3:a:cisco:web_security_appliance:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-20190703-wsa-dosCisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability2019-07-03csaf · cisco_csafUS
A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Secure Sockets Layer (SSL) server certificates. An attacker could exploit this vulnerability by installing a malformed certificate in a web server and sending a request to it through the Cisco WSA. A successful exploit could allow the attacker to cause an unexpected restart of the proxy process on an affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-wsa-dos ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-wsa-dos"]

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 2019-07-04geändert 2026-06-17

verwandt (1,894)

Verwandte Einträge.

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CVE-2026-85102US	—OT kritisch	54.1% (99th)	KEV	2026-09-09
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A certificate validation issue was addressed. This issue is fixed in macOS Ventura 13.6, iOS 16.7 and iPadOS 16.7. A malicious app may be able to bypass signature validation. Apple…
CVE-2023-20963US	high7.8OT kritisch	1.47% (74th)	KEV	2023-03-24
In WorkSource, there is a possible parcel mismatch. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed…
CVE-2022-26923US	high9.0OT kritisch	83.5% (100th)	KEV	2022-05-10
Active Directory Domain Services Elevation of Privilege Vulnerability
CVE-2022-20703US	high8.0OT kritisch	9.20% (95th)	KEV	2022-02-10
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate pr…

+1889 weitere

Referenzen (11)

Externe Belege — Patches, Meldungen, Analysen.

scry

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