How severe is CVE-2020-20412?

CVE-2020-20412 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-20412 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-20412?

CVE-2020-20412 primarily affects Stepmania. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-20412?

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

When was CVE-2020-20412 published?

CVE-2020-20412 was published on 2020-12-26 and last updated on 2026-06-17.

CVE-2020-20412

CVE-2020-20412 is a medium-severity vulnerability in Stepmania with a CVSS 3.x base score of 6.5. 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-129.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Stepmania
Published: 2020-12-26
Last modified: 2026-06-17

Description

lib/codebook.c in libvorbis before 1.3.6, as used in StepMania 5.0.12 and other products, has insufficient array bounds checking via a crafted OGG file. NOTE: this may overlap CVE-2018-5146.

Frequently asked questions

What is CVE-2020-20412?: lib/codebook.c in libvorbis before 1.3.6, as used in StepMania 5.0.12 and other products, has insufficient array bounds checking via a crafted OGG file. NOTE: this may overlap CVE-2018-5146.
How severe is CVE-2020-20412?: CVE-2020-20412 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-20412 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-20412?: CVE-2020-20412 primarily affects Stepmania. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-20412?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-20412 published?: CVE-2020-20412 was published on 2020-12-26 and last updated on 2026-06-17.

References

https://github.com/stepmania/stepmania/issues/1890

Affected products (2)

cpe:2.3:a:stepmania:stepmania:5.0.12:-:*:*:*:*:*:*
cpe:2.3:a:xiph.org:libvorbis:*:*:*:*:*:*:*:*

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