How severe is CVE-2017-9304?

CVE-2017-9304 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-9304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9304?

CVE-2017-9304 affects Virustotal Yara. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9304?

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

When was CVE-2017-9304 published?

CVE-2017-9304 was published on 2017-05-31 and last updated on 2026-06-17.

CVE-2017-9304

CVE-2017-9304 is a high-severity vulnerability in Virustotal Yara with a CVSS 3.x base score of 7.5. 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-674.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-674
Affected product: Virustotal Yara
Published: 2017-05-31
Last modified: 2026-06-17

Description

libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule that is mishandled in the _yr_re_emit function.

Frequently asked questions

What is CVE-2017-9304?: libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule that is mishandled in the _yr_re_emit function.
How severe is CVE-2017-9304?: CVE-2017-9304 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-9304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9304?: CVE-2017-9304 affects Virustotal Yara. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-9304 published?: CVE-2017-9304 was published on 2017-05-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:virustotal:yara:3.5.0:*:*:*:*:*:*:*

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