CVE-2024-20420

highpriority · track · 35OT risk · elevatedEPSS 0.004 · 29 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.36% (29th) EPSS
CVSS 8.8 · high
Is it mine?
26 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A vulnerability in the web-based management interface of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an authenticated, remote attacker with low privileges to run commands as an Admin user. This vulnerability is due to incorrect authorization verification by the HTTP server. An attacker could exploit this vulnerability by sending a malicious request to the web-based management interface. A successful exploit could allow the attacker to run commands as the Admin user.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

8.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.4–8.8

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9
v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · ENISA EU
v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 2.5
v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · Cisco PSIRT US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-250USCWE-250USCWE-863US
05

affected products (26)

Products and version ranges known to be affected.

showing 20 of 26
06

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2024-3223Cisco Analog Telephone Adaptor (ATA): Mehrere SchwachstellenDeutsch2024-10-16csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen im Cisco Analog Telephone Adaptor ATA 191 und ATA 192 ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Cross-Site-Scripting-Angriff durchzuführen oder einen Denial-of-Service-Zustand zu erzeugen.

  • cisco-sa-ata19x-multi-RDTEqRsyCisco ATA 190 Series Analog Telephone Adapter Firmware Vulnerabilities2024-10-16csaf · cisco_csafUS

    Multiple vulnerabilities in Cisco ATA 190 Series Analog Telephone Adapter firmware, both on-premises and multiplatform, could allow a remote attacker to delete or change the configuration, execute commands as the root user, conduct a cross-site scripting (XSS) attack against a user of the interface, view passwords, conduct a cross-site request forgery (CSRF) attack, or reboot the device. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released firmware updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. However, there is a mitigation that addresses some of these vulnerabilities for Cisco ATA 191 on-premises firmware only.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisco_csafNVDCVE.orgMITRE
published 2024-10-16modified 2026-06-17
09

references (6)

External citations — patches, advisories, analysis.

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