High severity · published May 10, 2021
CVE-2021-31520
A weak session token authentication bypass vulnerability in Trend Micro IM Security 1.6 and 1.6.5 could allow an remote attacker to guess currently logged-in administrators'…
8.1
CVSS
3.9%
EPSS
No
On KEV
Description
A weak session token authentication bypass vulnerability in Trend Micro IM Security 1.6 and 1.6.5 could allow an remote attacker to guess currently logged-in administrators' session session token in order to gain access to the product's web management interface.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.9% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IS
IM Security · Trendmicro
1.6; 1.6.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31520
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31520
Patch
https://success.trendmicro.com/solution/000286439
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-525/
More from IM Security
7.0
CVE-2019-14688
Trend Micro has repackaged installers for several Trend Micro products that were found to utilize a version of an install package that had a DLL hijack vulnerability that could be…