CVE-2021-28095

MEDIUMNVD 4.84.8—

4.8

OX Documents before 7.10.5-rev5 has Incorrect Access Control for documents that contain XML structures because hash collisions can occur, due to use of CRC32.

CVSS v3: 4.8
EG Score: 4.8(medium)
EPSS: 34.7%
KEV: Not listed

Published

July 30, 2021

Last Modified

November 21, 2024

References (6)

cve@mitrehttp://packetstormsecurity.com/files/163569/OX-Documents-7.10.5-Improper-Authorization.html
cve@mitrehttp://seclists.org/fulldisclosure/2021/Jul/37
cve@mitrehttps://www.open-xchange.com
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/163569/OX-Documents-7.10.5-Improper-Authorization.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/Jul/37
af854a3a-2127-422b-91ae-364da2661108https://www.open-xchange.com

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 12:56 UTCEG score recompute
2026-05-26 12:56 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-28095?

CVE-2021-28095 is a medium vulnerability published on July 30, 2021. OX Documents before 7.10.5-rev5 has Incorrect Access Control for documents that contain XML structures because hash collisions can occur, due to use of CRC32.

When was CVE-2021-28095 disclosed?

CVE-2021-28095 was first published in the National Vulnerability Database on July 30, 2021, 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-2021-28095 actively exploited?

CVE-2021-28095 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28095?

CVE-2021-28095 has a CVSS v3 base score of 4.8 (NVD).

How do I remediate CVE-2021-28095?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28095, 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.

Dependency Blast Radius

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CVE-2021-28095

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-28095?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)