HOMEVULNERABILITIESCVE-2026-20158
HIGH

CVE-2026-20158

CWE-664Published: July 15, 2026· Updated: Jul 15, 2026

7.5
CVSS v3.1
EPSS:0.25%probability of exploitation in 30 daysPercentile:16.5th

Official Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco RoomOS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.

The vulnerabilities tracked by CVE-2026-20158 are related to improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.

NVD Source

Technical Analysis

CVE-2026-20158 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Mentioned vendors (from description):
Cisco
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (1)

→
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq

Quick Facts

CVE IDCVE-2026-20158
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-664
CISA KEVNo
EPSS (30d)0.25%
PublishedJul 15, 2026

Related CVEs (CWE-664)

CVE-2019-5816
8.8
CVE-2020-3175
8.6
CVE-2023-44295
8.1
CVE-2016-8763
7.8
CVE-2023-44288
7.5
CVE-2022-20856
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-20158 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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