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No exploitation reportedFix available

CVE-2021-3326

No exploitation reported by the sources we read.

  • Published2021-01-27
  • Fixed inxcp3110 · xcp2410
  • WeaknessCWE-617

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-01-2720:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-3326?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-3326?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Fujitsu m10-1 firmwareversion to verify
BranchAffectedFixed in
—< xcp3110xcp3110
—< xcp2410xcp2410
Fujitsu m10-4 firmwareversion to verify
BranchAffectedFixed in
—< xcp3110xcp3110
—< xcp2410xcp2410
Fujitsu m10-4s firmwareversion to verify
BranchAffectedFixed in
—< xcp3110xcp3110
—< xcp2410xcp2410

8 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • nss_hesiodAlmaLinux:8all versions · fixed in 2.28-151.el8and 3 other packages

Full record on NVD

Fix

  1. Update Fujitsu m10-1 firmware to xcp3110 · xcp2410

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-06-09
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.17.52025-06-09
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-6172025-06-09
  • NVDweakness (CWE)CWE-617read 2026-10-23
  • FIRST EPSSEPSS score3.8 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2021-01-27
Last Modified
2026-10-14
NVD 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.

Is CVE-2021-3326 actively exploited?

Active exploitation of CVE-2021-3326 has not been confirmed. Its EPSS score was 3.8% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3326?

CVE-2021-3326 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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