CVE-2021-3326

Name: CVE-2021-3326
Creator: NVD / NIST
Published: 2021-01-27T20:15:14.02+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.09%

Last modified Jun 17, 2026

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

7.5/10

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

EPSS Probability

3.09%

86.1th percentile

Probability of exploitation in the next 30 days. Learn more

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://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
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://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=7d88c6142c6efc160c0ee5e4f85cde382c072888
https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory

Timeline

Published: Jan 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3326?

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.

Are you affected by CVE-2021-3326?

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

Scan your code now

Source: NVD / NIST