Is CVE-2020-29509 in the CISA KEV catalog?

No. CVE-2020-29509 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-29509?

CVE-2020-29509 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2020-29509?

CVE-2020-29509 has an EPSS score of 2.08% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-29509?

Upgrade Go Programming Language to 1.17 or later.

CVE & CISA-KEV Catalog

CVE-2020-29509

CRITICALEPSS 79th pctl

9.8

CVSS v3

NVD

Description

The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

CWE-115

How to fix

Remediation Available

Go Programming LanguageWindows application

Affected:1.17Fixed in:1.17https://go.dev

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.08%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Third-Party Advisory2

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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.