How severe is CVE-2025-6498?

CVE-2025-6498 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-6498 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-2025-6498?

CVE-2025-6498 affects Htacg Tidy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6498?

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

Does CVE-2025-6498 have an EU (EUVD) identifier?

Yes. CVE-2025-6498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18861.

When was CVE-2025-6498 published?

CVE-2025-6498 was published on 2025-06-23 and last updated on 2026-06-17.

CVE-2025-6498

CVE-2025-6498 is a low-severity vulnerability in Htacg Tidy with a CVSS 3.x base score of 3.3. 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-401.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 1.7
CVSS v4: 1.9
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18861
Weakness: CWE-401
Affected product: Htacg Tidy
Published: 2025-06-23
Last modified: 2026-06-17

Description

A vulnerability classified as problematic has been found in HTACG tidy-html5 5.8.0. Affected is the function defaultAlloc of the file src/alloc.c. The manipulation leads to memory leak. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-6498?: A vulnerability classified as problematic has been found in HTACG tidy-html5 5.8.0. Affected is the function defaultAlloc of the file src/alloc.c. The manipulation leads to memory leak. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-6498?: CVE-2025-6498 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-6498 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-2025-6498?: CVE-2025-6498 affects Htacg Tidy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6498?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-6498 have an EU (EUVD) identifier?: Yes. CVE-2025-6498 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18861.
When was CVE-2025-6498 published?: CVE-2025-6498 was published on 2025-06-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:htacg:tidy:5.8.0:*:*:*:*:*:*:*

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