Is CVE-2020-7248 in the CISA KEV catalog?

No. CVE-2020-7248 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-7248?

CVE-2020-7248 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-7248?

CVE-2020-7248 has an EPSS score of 2.49% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-7248?

Upgrade openwrt to 18.06.7 or later.

CVE & CISA-KEV Catalog

CVE-2020-7248

HIGHEPSS 83th pctl

7.5

CVSS v3

NVD

Description

libubox in OpenWrt before 18.06.7 and 19.x before 19.07.1 has a tagged binary data JSON serialization vulnerability that may cause a stack based buffer overflow.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

openwrtNVD

Affected:>= 18.06.0, < 18.06.7Fixed in:18.06.7CVE-2020-7248derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.49%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

openwrt.org

Third-Party Advisory1

nvd.nist.gov

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.