CVE-2020-27618

Name: CVE-2020-27618
Creator: NVD / NIST
Published: 2021-02-26T23:15:11.123+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2020-27618 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228.. EPSS estimates a 0.89% 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 multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.89%

54.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gnu	Glibc	<= 2.32
Netapp	Ontap Select Deploy Administration Utility	All versions
Netapp	A250 Firmware	All versions
Netapp	500f Firmware	All versions
Netapp	H410c Firmware	All versions
Netapp	H300s Firmware	All versions
Netapp	H500s Firmware	All versions
Netapp	H700s Firmware	All versions
Netapp	H300e Firmware	All versions
Netapp	H500e Firmware	All versions
Netapp	H700e Firmware	All versions
Netapp	H410s Firmware	All versions
Oracle	Communications Cloud Native Core Service Communication Proxy	1.14.0
Debian	Debian Linux	10.0

References

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-20210401-0006/Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=19519#c21Issue Tracking, Patch, Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=26224Exploit, Issue Tracking, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, 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-20210401-0006/Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=19519#c21Issue Tracking, Patch, Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=26224Exploit, Issue Tracking, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlNot Applicable, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory

Timeline

Published: Feb 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27618?

How severe is CVE-2020-27618?

CVE-2020-27618 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27618?

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-2020-27618?

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

Scan your code now

Source: NVD / NIST