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CVE-2020-27618 GNU glibc

Affected softwareGNU glibc
Severity5.5 Medium CVSS 3.1 3 scores
WeaknessCWE-835
Published26 Feb 2021
Updated14 Oct 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 0.94% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

5.5 MEDIUM v3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H 3 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CISA-ADP Secondary
CVSS 2.0 2.1 none AV:L/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update January 2022 ↗ CPU 2022-Q1 Oracle Communications / SCP (glibc) (1.14.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications SCP (glibc) 1.14.0 1.14.0

Products and versions

14 products, 14 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 10.0
nvd gnu glibc generic ≤ 2.32
nvd netapp 500f firmware generic any version
nvd netapp a250 firmware generic any version
nvd netapp h300e firmware generic any version
nvd netapp h300s firmware generic any version
nvd netapp h410c firmware generic any version
nvd netapp h410s firmware generic any version
nvd netapp h500e firmware generic any version
nvd netapp h500s firmware generic any version
nvd netapp h700e firmware generic any version
nvd netapp h700s firmware generic any version
nvd netapp ontap select deploy administration utility generic any version
nvd oracle communications cloud native core service communication proxy generic 1.14.0

Earlier manual review

A reviewer classified this CVE in an older dataset. We kept the labels and products below, but not the reviewer's reasoning.

## Manual Classification Context **Labels:** SCP (GLIBC) **Products:** ORACLE COMMUNICATIONS CLOUD NATIVE CORE SERVICE COMMUNICATION PROXY, ORACLE COMMUNICATIONS

References

URLTags
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202107-07 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210401-0006/ Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=19519#c21 Issue Tracking, Patch, Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=26224 Exploit, Issue Tracking, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Not Applicable, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-831302.html

Timeline

Published2021-02-26By the CVE Program.
NVD record modified2026-10-14NVD's own last-modified date for this record.