CVE-2023-2395Public exploitNetwork attack vector

Browser script execution via Login.userAgent injection

Published Apr 28, 2023 · Updated Feb 12, 2025

Cross-site scripting in the NETGEAR SRX5308 Web Management Interface 4.3.5-3 allows remote attackers to inject script via Login.userAgent. Public records identify Login.userAgent as attacker-controlled input but do not disclose the route or rendering code that fails to neutralize it. Execution requires a user to load the crafted response, after which the script can modify content in the management-interface origin.

CVSS severity6.1
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in the NETGEAR SRX5308 Web Management Interface 4.3.5-3 allows remote attackers to inject script via Login.userAgent. Public records identify Login.userAgent as attacker-controlled input but do not disclose the route or rendering code that fails to neutralize it. Execution requires a user to load the crafted response, after which the script can modify content in the management-interface origin.

The record

CVE
CVE-2023-2395
Published
Apr 28, 2023
Updated
Feb 12, 2025
Vendor
NETGEAR
Product
ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2023CVE 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=4.3.5-3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NETGEAR · ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308version=4.3.5-3

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/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 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 exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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