CVE-2021-29262

Q: How do I fix CVE-2021-29262?

Upgrade solr to 8.8.2 or later.

Q: Is CVE-2021-29262 being actively exploited?

Not that we know of. CVE-2021-29262 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 7.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 94% of all scored CVEs.

Q: How severe is CVE-2021-29262?

CVE-2021-29262 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-29262 affect?

Published advisories record a fix for solr (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 94th pctl

7.5

CVSS v3

NVD

Description

When starting Apache Solr versions prior to 8.8.2, configured with the SaslZkACLProvider or VMParamsAllAndReadonlyDigestZkACLProvider and no existing security.json znode, if the optional read-only user is configured then Solr would not treat that node as a sensitive path and would allow it to be readable. Additionally, with any ZkACLProvider, if the security.json is already present, Solr will not automatically update the ACLs.

CWE-522

How to fix

Remediation Available

solrNVD

Affected:< 8.8.2Fixed in:8.8.2CVE-2021-29262derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

7.78%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Vendor Advisory1

lists.apache.org

Third-Party Advisory1

security.netapp.com

Other references10

Related Vulnerabilities

Other CWE-522 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-17662	Critical	9.8	97%	-	-
CVE-2020-29583	Critical	9.8	90%	KEV	-
CVE-2021-30116	Critical	10.0	86%	KEV + Ransom	Fix
CVE-2024-44000	Critical	9.8	82%	-	Fix
CVE-2018-9160	Critical	9.8	76%	-	-
CVE-2017-9248	Critical	9.8	75%	KEV	Fix

Common questions

How do I fix CVE-2021-29262?

Upgrade solr to 8.8.2 or later.

Is CVE-2021-29262 being actively exploited?

Not that we know of. CVE-2021-29262 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 7.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 94% of all scored CVEs.

How severe is CVE-2021-29262?

CVE-2021-29262 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-29262 affect?

Published advisories record a fix for solr (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-29262

Markdown

[![CVE-2021-29262](https://tridentstack.com/cve/badge/CVE-2021-29262.svg)](https://tridentstack.com/cve/CVE-2021-29262)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-29262"><img src="https://tridentstack.com/cve/badge/CVE-2021-29262.svg" alt="CVE-2021-29262"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

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.