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CVE-2021-25829

HIGHCVSS 7.5/10EPSS 7.45%

Last modified

CVE-2021-25829 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An improper binary stream data handling issue was found in the [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. Using this bug, an attacker is able to produce a denial of service attack that can eventually shut down the target server.. EPSS estimates a 7.45% chance of exploitation in the next 30 days.

Description

An improper binary stream data handling issue was found in the [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. Using this bug, an attacker is able to produce a denial of service attack that can eventually shut down the target server.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
7.45%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
OnlyofficeDocument Server>= 4.0.0-9, <= 5.6.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-25829?
An improper binary stream data handling issue was found in the [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. Using this bug, an attacker is able to produce a denial of service attack that can eventually shut down the target server.
How severe is CVE-2021-25829?
CVE-2021-25829 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.45% probability of exploitation in the next 30 days.
How do I fix CVE-2021-25829?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25829?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST