CVE-2026-20119VulnerabilityPublished 4 Feb 2026Updated 12 Feb 2026

CVE-2026-20119: Cisco RoomOS Software · Improper Validation of Specified Type of Input

Affects Cisco RoomOS SoftwareSource CVE Database V5

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
CiscoCisco RoomOS Software	Affected =RoomOS 10.11.2.2 =RoomOS 10.15.2.2 =RoomOS 11.5.4.6 =RoomOS 11.5.2.4 =RoomOS 10.8.2.5 =RoomOS 10.11.5.2 =RoomOS 10.11.3.0 =RoomOS 10.15.5.3 =RoomOS 10.19.2.2 =RoomOS 11.1.3.1 =RoomOS 10.11.6.0 =RoomOS 10.19.3.0 =RoomOS 10.19.4.2 =RoomOS 10.3.2.4 =RoomOS 10.3.4.0 =RoomOS 10.15.3.0 =RoomOS 11.1.4.1 =RoomOS 11.14.2.3 =RoomOS 11.1.2.4 =RoomOS 10.8.3.1 =RoomOS 11.14.2.1 =RoomOS 10.3.3.0 =RoomOS 10.8.4.0 =RoomOS 10.15.4.1 =RoomOS 10.19.5.6 =RoomOS 10.11.4.1 =RoomOS 11.9.3.1 =RoomOS 11.5.3.3 =RoomOS 10.3.2.0 =RoomOS 11.9.2.4 =RoomOS 11.14.3.0 =RoomOS 11.17.2.2 =RoomOS 11.14.4.0 =RoomOS 10.19 StepUpg =RoomOS 11.17.3.0 =RoomOS 11.20.2.3 =RoomOS 11.14.5.0 =RoomOS 11.17.4.0 =RoomOS 11.20.3.0 =RoomOS 11.23.1.6 =RoomOS 11.23.1.8 =RoomOS 11.24.1.5 =RoomOS 11.24.2.4 =RoomOS 11.24.3.0 =RoomOS 11.24.4.1 =RoomOS 11.27.2.0 =RoomOS 11.28.1.3 =RoomOS 11.27.3.0 =RoomOS 11.31.1.5 =RoomOS 11.27.4.0 =RoomOS 11.32.2.1	Fixed in–
CiscoCisco TelePresence Endpoint Software (TC/CE)	Affected =CE9.3.0 =CE9.10.2 =CE9.2.6 =CE9.5.0 =CE9.3.3 =CE9.1.4 =CE9.3.2 =CE9.4.2 =CE9.3.1 =CE9.2.5 =CE9.9.3 =CE9.5.3 =CE9.10.3 =CE9.1.5 =CE9.5.2 =CE9.4.1 =CE9.6.1 =CE9.2.4 =CE9.5.1 =CE9.10.1 =CE9.1.2 =CE9.1.1 =CE9.9.4 =CE9.2.1 =CE9.1.3 =CE9.0.1 =CE9.1.6 =CE9.2.2 =CE9.4.0 =CE9.10.0 =CE9.2.3 =CE9.12.3 =CE9.15.18.4 =CE9.15.3.14 =CE9.15.18.6	Fixed in–

AI-suggested

Organizations should implement the following specific mitigation steps: 1) Inventory all Cisco RoomOS devices and verify their software versions against the affected list to identify vulnerable endpoints. 2) Monitor Cisco security advisories closely and apply official patches or firmware updates as soon as they become available to remediate the vulnerability. 3) Restrict network exposure of RoomOS devices by segmenting them within secure VLANs and limiting access to trusted users and systems only. 4) Employ network-level filtering to block unsolicited or suspicious traffic that could carry crafted text payloads targeting these devices. 5) Disable or restrict automatic processing of meeting invitations or other text inputs from untrusted sources where possible. 6) Implement robust logging and monitoring on collaboration infrastructure to detect unusual device reloads or crashes that may indicate exploitation attempts. 7) Conduct regular security assessments and penetration tests focused on collaboration endpoints to identify and mitigate similar vulnerabilities proactively. 8) Educate IT and security teams about this vulnerability to ensure rapid response and incident handling if exploitation is suspected.

Description

A vulnerability in the text rendering subsystem of Cisco TelePresence Collaboration Endpoint (CE) Software and Cisco RoomOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of input received by an affected device. An attacker could exploit this vulnerability by getting the affected device to render crafted text, for example, a crafted meeting invitation. As indicated in the CVSS score, no user interaction is required, such as accepting the meeting invitation. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Impact

The primary impact of CVE-2026-20119 is a denial of service condition on Cisco RoomOS-based video conferencing devices, which can disrupt enterprise communication and collaboration. For European organizations, especially those heavily reliant on Cisco TelePresence endpoints for remote meetings, this could lead to significant operational downtime and productivity loss. The vulnerability does not compromise confidentiality or integrity but affects availability, which is critical for real-time communication platforms. In sectors such as finance, government, healthcare, and large multinational corporations where video conferencing is integral, service interruptions could delay decision-making and impact business continuity. Additionally, repeated exploitation could degrade trust in collaboration infrastructure and necessitate costly incident response and remediation efforts. The lack of required authentication and user interaction increases the risk of widespread exploitation, potentially allowing attackers to target multiple devices across networks remotely. This could also be leveraged as part of a larger attack campaign to disrupt organizational operations or as a distraction while other attacks are conducted.

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tce-roomos-dos-9V9jrC2q (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 13 Feb 2026, 06:44 UTC

Technical details

References

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