CVE-2025-20183

mediumpriority · track · 21EPSS 0.004 · 38 %ileDEEUNLRUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.44% (38th) EPSS
CVSS 5.3 · medium
Is it mine?
117 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A vulnerability in a policy-based Cisco Application Visibility and Control (AVC) implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to evade the antivirus scanner and download a malicious file onto an endpoint.  The vulnerability is due to improper handling of a crafted range request header. An attacker could exploit this vulnerability by sending an HTTP request with a crafted range request header through the affected device. A successful exploit could allow the attacker to evade the antivirus scanner and download malware onto the endpoint without detection by Cisco Secure Web Appliance.

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.

5.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4
v3.15.8mediumAV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · ENISA EU
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · psirt@cisco.com USexploitability 3.9 · impact 1.4
v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · NCSC-NL NL
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Nsecondary · Cisco PSIRT US
03

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20US
05

affected products (117)

Products and version ranges known to be affected.

showing 20 of 117
06

advisories (3)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0042Kwetsbaarheden verholpen in Cisco AsyncOS SoftwareNL2025-02-07csaf · ncsc_nlNL

    Cisco heeft kwetsbaarheden verholpen in Cisco AsyncOS Software (Specifiek voor Cisco Secure Web Appliance en Cisco Secure Email Gateway).

  • WID-SEC-W-2025-0276Cisco AsyncOS, Secure Email Gateway und Secure Web Appliance: Mehrere SchwachstellenDeutsch2025-02-05csaf · cert_bundDE

    Ein entfernter anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Cisco AsyncOS, Cisco Secure Email Gateway und Cisco Secure Web Appliance ausnutzen, um beliebigen Code mit Administratorrechten auszuführen, Root-Rechte zu erlangen, vertrauliche Informationen preiszugeben, Sicherheitsmaßnahmen zu umgehen und einen Cross-Site-Scripting-Angriff durchzuführen.

  • cisco-sa-swa-range-bypass-2BsEHYSuCisco Secure Web Appliance Range Request Bypass Vulnerability2025-02-05csaf · cisco_csafUS

    A vulnerability in a policy-based Cisco Application Visibility and Control (AVC) implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to evade the antivirus scanner and download a malicious file onto an endpoint. The vulnerability is due to improper handling of a crafted range request header. An attacker could exploit this vulnerability by sending an HTTP request with a crafted range request header through the affected device. A successful exploit could allow the attacker to evade the antivirus scanner and download malware onto the endpoint without detection by Cisco Secure Web Appliance. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

07

also known as (5)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisco_csafncsc_nlNVDCVE.orgMITRE
published 2025-02-05modified 2026-06-17
09

references (4)

External citations — patches, advisories, analysis.

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