How severe is CVE-2023-36243?

CVE-2023-36243 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-36243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36243?

CVE-2023-36243 affects Flvmeta. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36243?

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-2023-36243 published?

CVE-2023-36243 was published on 2023-06-22 and last updated on 2026-06-17.

CVE-2023-36243

CVE-2023-36243 is a high-severity vulnerability in Flvmeta with a CVSS 3.x base score of 7.8. 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: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Flvmeta
Published: 2023-06-22
Last modified: 2026-06-17

Description

FLVMeta v1.2.1 was discovered to contain a buffer overflow via the xml_on_metadata_tag_only function at dump_xml.c.

Frequently asked questions

What is CVE-2023-36243?: FLVMeta v1.2.1 was discovered to contain a buffer overflow via the xml_on_metadata_tag_only function at dump_xml.c.
How severe is CVE-2023-36243?: CVE-2023-36243 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-36243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36243?: CVE-2023-36243 affects Flvmeta. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36243?: 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-2023-36243 published?: CVE-2023-36243 was published on 2023-06-22 and last updated on 2026-06-17.

References

https://github.com/noirotm/flvmeta/issues/19

Affected products (1)

cpe:2.3:a:flvmeta:flvmeta:1.2.1:*:*:*:*:*:*:*

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