Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-27618

CVE-2020-27618MEDIUM

n/a n/a — The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  N  H    5.5   .0094   60.2     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Oct 22  Reserved by mitre
  Feb 26  Published (CNA: mitre)
  Oct 14  EXPLOIT PUBLISHED — CVE-2020-27618. Public exploit reference added.

CWE-835 · CNA: mitre · CVSS v3.1 · 9 references · NVD status: Modified

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 22, 2020	Reserved	Reserved by mitre
February 26, 2021	Published	Published (CNA: mitre)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2020-27618. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-835

References (9)

https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-831302.html
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]

Authoritative record: CVE-2020-27618 at cve.org

Weaknesses: CWE-835

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-27618 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.