CVE-2021-3326
HIGHCVSS 7.5/10EPSS 3.09%
Last modified
CVE-2021-3326 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.. EPSS estimates a 3.09% chance of exploitation in the next 30 days.
Description
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Glibc | <= 2.32.0 |
| Netapp | E-Series Santricity Os Controller | >= 11.0, <= 11.60.3 |
| Netapp | Ontap Select Deploy Administration Utility | All versions |
| Oracle | Communications Cloud Native Core Security Edge Protection Proxy | 1.5.0 |
| Fujitsu | M10-1 Firmware | < xcp2410 |
| Fujitsu | M10-4 Firmware | < xcp2410 |
| Fujitsu | M10-4s Firmware | < xcp2410 |
| Fujitsu | M12-1 Firmware | < xcp2410 |
| Fujitsu | M12-2 Firmware | < xcp2410 |
| Fujitsu | M12-2s Firmware | < xcp2410 |
| Fujitsu | M10-1 Firmware | < xcp3110 |
| Fujitsu | M10-4 Firmware | < xcp3110 |
| Fujitsu | M10-4s Firmware | < xcp3110 |
| Fujitsu | M12-1 Firmware | < xcp3110 |
| Fujitsu | M12-2 Firmware | < xcp3110 |
| Fujitsu | M12-2s Firmware | < xcp3110 |
| Debian | Debian Linux | 10.0 |
References
- http://www.openwall.com/lists/oss-security/2021/01/28/2Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202107-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0007/Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=27256Issue Tracking, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/28/2Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202107-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210304-0007/Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=27256Issue Tracking, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3326?
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
How severe is CVE-2021-3326?
CVE-2021-3326 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.09% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3326?
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.
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.
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Are you affected by CVE-2021-3326?
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Scan your code nowSource: NVD / NIST