CVE-2024-12755Network attack vector

Browser code execution via stored XSS

Published Feb 11, 2025 · Updated Feb 12, 2025

Stored cross-site scripting in Avaya Spaces allows remote authenticated users to execute code in another user's browser and read sensitive data. The vendor identifies stored XSS but has not disclosed which input is retained or where output encoding fails. Exploitation requires low-privilege access, high-complexity conditions, and a user to render the stored content; execution occurs in the victim's browser context.

CVSS severity7.9
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Avaya Spaces allows remote authenticated users to execute code in another user's browser and read sensitive data. The vendor identifies stored XSS but has not disclosed which input is retained or where output encoding fails. Exploitation requires low-privilege access, high-complexity conditions, and a user to render the stored content; execution occurs in the victim's browser context.

The record

CVE
CVE-2024-12755
Published
Feb 11, 2025
Updated
Feb 12, 2025
Vendor
Avaya
Product
Avaya Spaces
Classifications
CWE-79, CAPEC-592, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avaya · Avaya Spacesversion=0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
7.9Avaya, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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