CVE-2024-36459Network attack vector

Browser script execution via injected HTTP responses

Published Jun 14, 2024 · Updated Aug 2, 2024

CRLF injection in Broadcom Symantec SiteMinder Web Agent 12.52 SP1 CR11 and earlier and 12.8 allows attackers to run JavaScript in browsers. The Web Agent fails to neutralize CRLF sequences when constructing HTTP responses, allowing attacker-controlled content to become response payload. Exploitation requires an affected Windows Web Agent on IIS or Domino and active interaction with the crafted response; successful attacks execute script in the client browser.

CVSS severity8.4
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CRLF injection in Broadcom Symantec SiteMinder Web Agent 12.52 SP1 CR11 and earlier and 12.8 allows attackers to run JavaScript in browsers. The Web Agent fails to neutralize CRLF sequences when constructing HTTP responses, allowing attacker-controlled content to become response payload. Exploitation requires an affected Windows Web Agent on IIS or Domino and active interaction with the crafted response; successful attacks execute script in the client browser.

The record

CVE
CVE-2024-36459
Published
Jun 14, 2024
Updated
Aug 2, 2024
Vendor
Broadcom
Product
Symantec SiteMinder
Classifications
CWE-93, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <=r12.52_sp1_cr11
  2. Affected versionversion=R 12.52 SP1 CR11 and below
  3. Affected versionversion=R12.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Broadcom · Symantec SiteMinderversion=0 <=r12.52_sp1_cr11; version=R 12.52 SP1 CR11 and below; version=R12.8

Published CVSS scores

8.4BroadcomCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:L/SI:H/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')
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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