How severe is CVE-2024-46478?

CVE-2024-46478 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-2024-46478 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-46478?

CVE-2024-46478 affects Htmldoc Project Htmldoc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-46478?

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.

Does CVE-2024-46478 have an EU (EUVD) identifier?

Yes. CVE-2024-46478 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41855.

When was CVE-2024-46478 published?

CVE-2024-46478 was published on 2024-10-24 and last updated on 2026-06-17.

CVE-2024-46478

CVE-2024-46478 is a critical-severity vulnerability in Htmldoc Project Htmldoc 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41855
Weakness: CWE-120
Affected product: Htmldoc Project Htmldoc
Published: 2024-10-24
Last modified: 2026-06-17

Description

HTMLDOC v1.9.18 contains a buffer overflow in parse_pre function,ps-pdf.cxx:5681.

Frequently asked questions

What is CVE-2024-46478?: HTMLDOC v1.9.18 contains a buffer overflow in parse_pre function,ps-pdf.cxx:5681.
How severe is CVE-2024-46478?: CVE-2024-46478 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-2024-46478 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-46478?: CVE-2024-46478 affects Htmldoc Project Htmldoc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-46478?: 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.
Does CVE-2024-46478 have an EU (EUVD) identifier?: Yes. CVE-2024-46478 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41855.
When was CVE-2024-46478 published?: CVE-2024-46478 was published on 2024-10-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:htmldoc_project:htmldoc:1.9.18:*:*:*:*:*:*:*

More vulnerabilities in Htmldoc Project Htmldoc

CVE-2024-45508 — Critical (CVSS 9.8): HTMLDOC before 1.9.19 has an out-of-bounds write in parse_paragraph in ps-pdf.cxx because of an attempt to strip…
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CVE-2021-23158 — Critical (CVSS 9.8): A flaw was found in htmldoc in v1.9.12. Double-free in function pspdf_export(),in ps-pdf.cxx may result in a…
CVE-2021-20308 — Critical (CVSS 9.8): Integer overflow in the htmldoc 1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of…
CVE-2021-34121 — High (CVSS 7.8): An Out of Bounds flaw was discovered in htmodoc 1.9.12 in function parse_tree() in toc.cxx, this possibly leads to…
CVE-2021-34119 — High (CVSS 7.8): A flaw was discovered in htmodoc 1.9.12 in function parse_paragraph in ps-pdf.cxx ,this flaw possibly allows possible…

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