CVE-2020-5253

LOWNVD 3.93.9—

3.9

NetHack before version 3.6.0 allowed malicious use of escaping of characters in the configuration file (usually .nethackrc) which could be exploited. This bug is patched in NetHack 3.6.0.

CVSS v3: 3.9
EG Score: 3.9(medium)
EPSS: 43.0%
KEV: Not listed

Published

March 10, 2020

Last Modified

November 21, 2024

References (4)

security-advisories@githubhttps://github.com/NetHack/NetHack/commits/612755bfb5c412079795c68ba392df5d93874ed8
security-advisories@githubhttps://github.com/NetHack/NetHack/security/advisories/GHSA-2c7p-3fj4-223m
af854a3a-2127-422b-91ae-364da2661108https://github.com/NetHack/NetHack/commits/612755bfb5c412079795c68ba392df5d93874ed8
af854a3a-2127-422b-91ae-364da2661108https://github.com/NetHack/NetHack/security/advisories/GHSA-2c7p-3fj4-223m

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 8× 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
2026-05-27 06:53 UTCEG score recompute
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 04:16 UTCOSV refresh

Frequently asked(5)

What is CVE-2020-5253?

CVE-2020-5253 is a low vulnerability published on March 10, 2020. NetHack before version 3.6.0 allowed malicious use of escaping of characters in the configuration file (usually .nethackrc) which could be exploited. This bug is patched in NetHack 3.6.0.

When was CVE-2020-5253 disclosed?

CVE-2020-5253 was first published in the National Vulnerability Database on March 10, 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-2020-5253 actively exploited?

CVE-2020-5253 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 43.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-5253?

CVE-2020-5253 has a CVSS v3 base score of 3.9 (NVD).

How do I remediate CVE-2020-5253?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-5253, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-5253

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CVE-2020-5253

📅 Published

🔄 Last Modified

🔗 References (4)