How severe is CVE-2015-6826?

CVE-2015-6826 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2015-6826 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6826?

CVE-2015-6826 primarily affects Ffmpeg. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-6826?

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-2015-6826 published?

CVE-2015-6826 was published on 2015-09-06 and last updated on 2026-06-17.

CVE-2015-6826

CVE-2015-6826 is a high-severity vulnerability in Ffmpeg with a CVSS 2.0 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ffmpeg
Published: 2015-09-06
Last modified: 2026-06-17

Description

The ff_rv34_decode_init_thread_copy function in libavcodec/rv34.c in FFmpeg before 2.7.2 does not initialize certain structure members, which allows remote attackers to cause a denial of service (invalid pointer access) or possibly have unspecified other impact via crafted (1) RV30 or (2) RV40 RealVideo data.

Frequently asked questions

What is CVE-2015-6826?: The ff_rv34_decode_init_thread_copy function in libavcodec/rv34.c in FFmpeg before 2.7.2 does not initialize certain structure members, which allows remote attackers to cause a denial of service (invalid pointer access) or possibly have unspecified other impact via crafted (1) RV30 or (2) RV40 RealVideo data.
How severe is CVE-2015-6826?: CVE-2015-6826 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2015-6826 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6826?: CVE-2015-6826 primarily affects Ffmpeg. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-6826?: 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-2015-6826 published?: CVE-2015-6826 was published on 2015-09-06 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*

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