CVE-2026-3862
CVE-2026-3862 is a medium-severity vulnerability in Broadcom Symantec Siteminder with a CVSS 3.x base score of 4.8. 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 4.8)
- CVSS v4: 4.6
- EPSS exploit prediction: 0% (9th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10508
- Weakness: CWE-79
- Affected product: Broadcom Symantec Siteminder
- Published:
- Last modified:
Description
Cross-site Scripting (XSS) allows an attacker to submit specially crafted data to the application which is returned unaltered in the resulting web page.
Frequently asked questions
- What is CVE-2026-3862?
- Cross-site Scripting (XSS) allows an attacker to submit specially crafted data to the application which is returned unaltered in the resulting web page.
- How severe is CVE-2026-3862?
- CVE-2026-3862 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2026-3862 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-3862?
- CVE-2026-3862 primarily affects Broadcom Symantec Siteminder. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-3862?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-3862 have an EU (EUVD) identifier?
- Yes. CVE-2026-3862 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10508.
- When was CVE-2026-3862 published?
- CVE-2026-3862 was published on 2026-03-10 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:broadcom:symantec_siteminder:*:*:*:*:*:*:*:*
- cpe:2.3:a:broadcom:symantec_siteminder:12.9:*:*:*:*:*:*:*
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