CVE-2024-12756Network attack vector

Authenticated disclosure and page modification via HTML injection

Published Feb 11, 2025 · Updated Oct 1, 2025

HTML injection in Avaya Spaces allows remote authenticated users to disclose sensitive information or modify page content shown to another user. Avaya has not disclosed the affected input, rendering locus, or the operation that fails to neutralize attacker-controlled HTML. Exploitation requires high privileges and user interaction, and the reported consequence is limited to sensitive-data disclosure or alteration of displayed page content.

CVSS severity7.3
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML injection in Avaya Spaces allows remote authenticated users to disclose sensitive information or modify page content shown to another user. Avaya has not disclosed the affected input, rendering locus, or the operation that fails to neutralize attacker-controlled HTML. Exploitation requires high privileges and user interaction, and the reported consequence is limited to sensitive-data disclosure or alteration of displayed page content.

The record

CVE
CVE-2024-12756
Published
Feb 11, 2025
Updated
Oct 1, 2025
Vendor
Avaya
Product
Avaya Spaces
Classifications
CWE-1287, CWE-79, CAPEC-137, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 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 privilegesadmin

What is affected?

Avaya · Avaya Spacesversion=0

Published CVSS scores

7.3Avaya, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1287Improper Validation of Specified Type of Input
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-137Parameter Injection
T1189Drive-by Compromise

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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