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CVE-2020-5254

20
FAUCET Score

CVE-2020-5254 describes an out-of-bounds vulnerability in NetHack versions prior to 3.6.6, specifically exploitable through certain values of the hilite_status option. This vulnerability carries a high severity CVSS score of 8.1, indicating a critical risk due to its network-based attack vector, high impact on confidentiality, integrity, and availability, and low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion and media coverage are minimal, the potential for significant compromise remains.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.6.1, < 3.6.6CPE matchmatch criteria
cpe:2.3:a:nethack:nethack:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.9LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
63.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0113 is in the 26th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

github.com / NetHack/NetHack/security/advisories/GHSA-2ch6-6r8h-m2p9
Vendor Advisory