CVE-2021-26095
Last modified
CVE-2021-26095 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the session cookie, may allow a remote attacker already in possession of a cookie to possibly reveal and alter or forge its content, thereby escalating privileges.. EPSS estimates a 0.69% chance of exploitation in the next 30 days.
Description
The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the session cookie, may allow a remote attacker already in possession of a cookie to possibly reveal and alter or forge its content, thereby escalating privileges.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortimail | >= 6.2.0, <= 6.2.6 |
| Fortinet | Fortimail | >= 6.4.0, < 6.4.5 |
References
- https://fortiguard.com/advisory/FG-IR-21-019Vendor Advisory
- https://fortiguard.com/advisory/FG-IR-21-019Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26095?
How severe is CVE-2021-26095?
How do I fix CVE-2021-26095?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-26088An improper authentication vulnerability in FSSO Collector v…9.6
- CVE-2021-26089An improper symlink following in FortiClient for Mac 6.4.3 a…7.8
- CVE-2021-26090A missing release of memory after its effective lifetime vul…7.5
- CVE-2021-26091A use of a cryptographically weak pseudo-random number gener…7.5
- CVE-2021-26092Failure to sanitize input in the SSL VPN web portal of Forti…6.1
- CVE-2021-26093An access of uninitialized pointer (CWE-824) vulnerability i…6.5
- CVE-2021-26096Multiple instances of heap-based buffer overflow in the comm…8.8
- CVE-2021-26097An improper neutralization of special elements used in an OS…8.8
- CVE-2021-26098An instance of small space of random values in the RPC API o…7.5
- CVE-2021-26099Missing cryptographic steps in the Identity-Based Encryption…4.9
- CVE-2021-26100A missing cryptographic step in the Identity-Based Encryptio…7.5
- CVE-2021-26102A relative path traversal vulnerability (CWE-23) in FortiWAN…9.1
Are you affected by CVE-2021-26095?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST