CVE-2020-27818

LOWNVD 3.33.3—
EchelonGraph scoreMEDIUM confidence

Score 3.3 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
3.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 3.3Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability.

CVSS v3
3.3
EG Score
3.3(medium)
EG Risk
20(Track)
EG Risk 20/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity33% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

December 8, 2020

Last Modified

November 21, 2024

References (16)

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Frequently asked(5)

What is CVE-2020-27818?
CVE-2020-27818 is a low vulnerability published on December 8, 2020. A flaw was found in the checkchunkname() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability.
When was CVE-2020-27818 disclosed?
CVE-2020-27818 was first published in the National Vulnerability Database on December 8, 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-2020-27818 actively exploited?
CVE-2020-27818 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 32.6% of all scored CVEs.
What is the CVSS score of CVE-2020-27818?
CVE-2020-27818 has a CVSS v3 base score of 3.3 (NVD).
How do I remediate CVE-2020-27818?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-27818, 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.

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