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No exploitation reportedFix available

CVE-2021-30485

No exploitation reported by the sources we read.

  • Published2021-04-11
  • WeaknessCWE-476

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

An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_internal_dtd(), while parsing a crafted XML file, performs incorrect memory handling, leading to a NULL pointer dereference while running strcmp() on a NULL pointer.

Timeline

dates in UTC
  1. 2021-04-1116:15CVE publishedNVD

Versions per branch

NVD
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
Ezxml project ezxml
BranchAffectedFixed in
0.8= 0.8.6no fix published

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

  • mapcacheDebian:14all versions · no fixed version listed
  • navitUbuntu:26.10all versions · no fixed version listedand 2 other packages
  • navitUbuntu:26.04:LTSall versions · no fixed version listedand 2 other packages
  • navitUbuntu:25.10all versions · no fixed version listedand 2 other packages
  • navitUbuntu:24.04:LTSall versions · no fixed version listedand 2 other packages
  • navitUbuntu:18.04:LTSall versions · no fixed version listedand 2 other packages
  • navitUbuntu:16.04:LTSall versions · no fixed version listedand 1 other package
  • netcdfUbuntu:22.04:LTSall versions · no fixed version listedand 4 other packages

22 more package ranges on OSV.dev

Vendor advisories

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2021-04-11
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-vjh2-vp2w-jhxr

Frequently asked questions

What is CVE-2021-30485?

An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_internal_dtd(), while parsing a crafted XML file, performs incorrect memory handling, leading to a NULL pointer dereference while running strcmp() on a NULL pointer.

Is CVE-2021-30485 actively exploited?

Active exploitation of CVE-2021-30485 has not been confirmed. Its EPSS score was 1.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-30485?

CVE-2021-30485 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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Sources for this record