CVE-2020-6019

HIGHNVD 7.57.5—

7.5

Valve's Game Networking Sockets prior to version v1.2.0 improperly handles inlined statistics messages in function CConnectionTransportUDPBase::Received_Data(), leading to an exception thrown from libprotobuf and resulting in a crash.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 91.4%
KEV: Not listed

Published

November 13, 2020

Last Modified

November 21, 2024

References (4)

cve@checkpointhttps://github.com/ValveSoftware/GameNetworkingSockets/commit/d944a10808891d202bb1d5e1998de6e0423af678
cve@checkpointhttps://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/
af854a3a-2127-422b-91ae-364da2661108https://github.com/ValveSoftware/GameNetworkingSockets/commit/d944a10808891d202bb1d5e1998de6e0423af678
af854a3a-2127-422b-91ae-364da2661108https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-248

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-23 05:13 UTCEG score recompute
2026-05-23 05:13 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-6019?

CVE-2020-6019 is a high vulnerability published on November 13, 2020. Valve's Game Networking Sockets prior to version v1.2.0 improperly handles inlined statistics messages in function CConnectionTransportUDPBase::Received_Data(), leading to an exception thrown from libprotobuf and resulting in a crash.

When was CVE-2020-6019 disclosed?

CVE-2020-6019 was first published in the National Vulnerability Database on November 13, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-6019 actively exploited?

CVE-2020-6019 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-6019?

CVE-2020-6019 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-6019?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-6019, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-6019

📅 Published

🔄 Last Modified

🔗 References (4)