How severe is CVE-2012-0942?

CVE-2012-0942 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2012-0942 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0942?

CVE-2012-0942 primarily affects Realnetworks Helix Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-0942?

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-2012-0942 published?

CVE-2012-0942 was published on 2012-04-17 and last updated on 2026-06-16.

CVE-2012-0942

CVE-2012-0942 is a high-severity vulnerability in Realnetworks Helix Server 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-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Realnetworks Helix Server
Published: 2012-04-17
Last modified: 2026-06-16

Description

Buffer overflow in rn5auth.dll in RealNetworks Helix Server and Helix Mobile Server 14.x before 14.3.x allows remote attackers to execute arbitrary code via crafted authentication credentials.

Frequently asked questions

What is CVE-2012-0942?: Buffer overflow in rn5auth.dll in RealNetworks Helix Server and Helix Mobile Server 14.x before 14.3.x allows remote attackers to execute arbitrary code via crafted authentication credentials.
How severe is CVE-2012-0942?: CVE-2012-0942 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2012-0942 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0942?: CVE-2012-0942 primarily affects Realnetworks Helix Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-0942?: 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-2012-0942 published?: CVE-2012-0942 was published on 2012-04-17 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:realnetworks:helix_server:14.0.0:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_server:14.0.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_server:14.2:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_server:14.2.0.212:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_mobile_server:14.0.0:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_mobile_server:14.0.1:*:*:*:*:*:*:*

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