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CVE-2021-28094

21
FAUCET Score

CVE-2021-28094 is an Incorrect Access Control vulnerability in OX Documents versions prior to 7.10.5-rev7, stemming from the use of CRC32 which can lead to hash collisions in converted documents. Rated as Medium severity (CVSS 6.5), it allows unauthenticated attackers to achieve partial confidentiality and integrity impacts over the network with low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.10.5CPE matchmatch criteria
cpe:2.3:a:open-xchange:open-xchange_documents:*:*:*:*:*:*:*:*
7.10.5CPE matchmatch criteria
cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:-:*:*:*:*:*:*
7.10.5CPE matchmatch criteria
cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:revision1:*:*:*:*:*:*
7.10.5CPE matchmatch criteria
cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:revision2:*:*:*:*:*:*
7.10.5CPE matchmatch criteria
cpe:2.3:a:open-xchange:open-xchange_documents:7.10.5:revision3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.11%
Probability of exploitation in next 30 days
EPSS Percentile
62.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0111 is in the 40th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/163569/OX-Documents-7.10.5-Improper-Authorization.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2021/Jul/37
Mailing ListThird Party Advisory
open-xchange.com
Product