How severe is CVE-2023-23956?

CVE-2023-23956 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-23956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23956?

CVE-2023-23956 affects Broadcom Symantec Siteminder Webagent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-23956?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-23956 published?

CVE-2023-23956 was published on 2023-05-30 and last updated on 2026-06-17.

CVE-2023-23956

CVE-2023-23956 is a medium-severity vulnerability in Broadcom Symantec Siteminder Webagent with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Broadcom Symantec Siteminder Webagent
Published: 2023-05-30
Last modified: 2026-06-17

Description

A user can supply malicious HTML and JavaScript code that will be executed in the client browser

Frequently asked questions

What is CVE-2023-23956?: A user can supply malicious HTML and JavaScript code that will be executed in the client browser
How severe is CVE-2023-23956?: CVE-2023-23956 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-23956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23956?: CVE-2023-23956 affects Broadcom Symantec Siteminder Webagent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-23956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-23956 published?: CVE-2023-23956 was published on 2023-05-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:broadcom:symantec_siteminder_webagent:12.52:*:*:*:*:*:*:*

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