How severe is CVE-2021-35498?

CVE-2021-35498 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35498 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35498?

CVE-2021-35498 primarily affects Tibco Ebx. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35498?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-35498 published?

CVE-2021-35498 was published on 2021-10-13 and last updated on 2026-06-17.

CVE-2021-35498

CVE-2021-35498 is a critical-severity vulnerability in Tibco Ebx with a CVSS 3.x base score of 9.8. 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-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 9.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-521
Affected product: Tibco Ebx
Published: 2021-10-13
Last modified: 2026-06-17

Description

The TIBCO EBX Web Server component of TIBCO Software Inc.'s TIBCO EBX, TIBCO EBX, TIBCO EBX, and TIBCO Product and Service Catalog powered by TIBCO EBX contains a vulnerability that under certain specific conditions allows an attacker to enter a password other than the legitimate password and it will be accepted as valid. Affected releases are TIBCO Software Inc.'s TIBCO EBX: versions 5.8.123 and below, TIBCO EBX: versions 5.9.3, 5.9.4, 5.9.5, 5.9.6, 5.9.7, 5.9.8, 5.9.9, 5.9.10, 5.9.11, 5.9.12, 5.9.13, and 5.9.14, TIBCO EBX: versions 6.0.0 and 6.0.1, and TIBCO Product and Service Catalog powered by TIBCO EBX: version 1.0.0.

Frequently asked questions

What is CVE-2021-35498?: The TIBCO EBX Web Server component of TIBCO Software Inc.'s TIBCO EBX, TIBCO EBX, TIBCO EBX, and TIBCO Product and Service Catalog powered by TIBCO EBX contains a vulnerability that under certain specific conditions allows an attacker to enter a password other than the legitimate password and it will be accepted as valid. Affected releases are TIBCO Software Inc.'s TIBCO EBX: versions 5.8.123 and below, TIBCO EBX: versions 5.9.3, 5.9.4, 5.9.5, 5.9.6, 5.9.7, 5.9.8, 5.9.9, 5.9.10, 5.9.11, 5.9.12, 5.9.13, and 5.9.14, TIBCO EBX: versions 6.0.0 and 6.0.1, and TIBCO Product and Service Catalog powered by TIBCO EBX: version 1.0.0.
How severe is CVE-2021-35498?: CVE-2021-35498 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35498 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35498?: CVE-2021-35498 primarily affects Tibco Ebx. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-35498 published?: CVE-2021-35498 was published on 2021-10-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:tibco:ebx:*:*:*:*:*:*:*:*
cpe:2.3:a:tibco:product_and_service_catalog_powered_by_tibco_ebx:1.0.0:*:*:*:*:*:*:*

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