CVE-2020-3308

mediumPriorität · verfolgen · 20EPSS 0.006 · 49. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.61% (49th) EPSS

CVSS 4 · medium

Is it mine?

33 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · bewertet 2026-10-27

A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

Behebungen

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

Kein Fix verfügbar; Exposition mindern.

Kein Fix verfügbar5.3.0cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar5.4.0cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.0cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.0.1cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.1cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.1.1cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.1.2cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.1.3cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.0.1.4cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.1cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.2cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.3cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.4cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.5cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.6cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.1.0.7cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0.1cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0.2cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0.3cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0.4cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0.5cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.0.6cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.1cisco_csaf
No remediation is available at this time.
Kein Fix verfügbar6.2.2cisco_csaf
No remediation is available at this time.

cvss

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

4.9

010

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

v2.04mediumAV:N/AC:L/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 8 · Auswirkung 2.9

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 1.2 · Auswirkung 3.6

v3.04.9mediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · ENISA EU

v3.04.9mediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · psirt@cisco.com USAusnutzbarkeit 1.2 · Auswirkung 3.6

v3.04.9mediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · Cisco PSIRT US

v3.14.9mediumAV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.14.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Trackcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-347USprimärCWE-347US

betroffene Produkte (33)

Betroffene Produkte und Versionsbereiche.

20 von 33 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-sigbypass-FcvPPCePCisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability2020-05-06csaf · cisco_csafUS
A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image. Cisco has released software updates that address the vulnerability described in this advisory. 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 CVE.org MITRE

veröffentlicht 2020-05-06geändert 2026-08-11

verwandt (1,048)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-67276US	high8.1OT kritisch	8.94% (95th)	Exploit	2026-09-05
RouterOS does not compare the complete RSA public key when matching an SSH authentication request to an authorized user key, checking the key type and modulus but omitting the expo…
CVE-2026-5430US	—OT kritisch	22.4% (98th)	KEV	2026-08-06
The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupport…
CVE-2026-48558US	—OT kritisch	77.7% (100th)	KEV	2026-06-12
SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain an authentication bypass vulnerability in the OIDC authentication flow. When OIDC authentication is config…
CVE-2025-59719US	—OT kritisch	29.2% (98th)	—	2025-12-09
An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb 8.0.0, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9 may allow an unauthenticate…
CVE-2025-59718US	—OT kritisch	68.3% (99th)	KEV	2025-12-09
A improper verification of cryptographic signature vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 t…

+1043 weitere

Referenzen (7)

Externe Belege — Patches, Meldungen, Analysen.

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