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CVE-2021-42564

MEDIUMCVSS 5.4/10EPSS 0.66%

Last modified

CVE-2021-42564 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' substring in the editor parameter.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' substring in the editor parameter.

Metrics

CVSS 3.1
5.4/10

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

EPSS Probability
0.66%

47.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CryptshareCryptshare Server< 5.1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-42564?
An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' substring in the editor parameter.
How severe is CVE-2021-42564?
CVE-2021-42564 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42564?
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-2021-42564?

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

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Source: NVD / NIST