CVE catalog
CVE-2016-4472
xmltok library vulnerabilities
- Severity
- High · CVSS 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 11.95% · Oct 25, 2026
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-1283 and CVE-2015-2716.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | expat | sid | 2.9.0-1 | fixed |
| Debian | expat | forky | 2.9.0-1 | fixed |
| Debian | expat | trixie | 2.8.3-1~deb13u1 | fixed |
| Debian | expat | trixie-security | 2.9.0-1~deb13u1 | fixed |
| Debian | expat | bookworm | 2.5.0-1+deb12u2 | fixed |
| Debian | expat | bookworm-security | 2.5.0-1+deb12u5 | fixed |
| Debian | libxmltok | bookworm | 1.2-4 | vulnerable |
| Ubuntu | libxmltok | noble | Not reported | vulnerable |
| Ubuntu | expat | noble | 2.1.1-2 | fixed |
| Ubuntu | libxmltok | noble | 1.2-4.1ubuntu2.24.0.4.1+esm2 | fixed |
| Ubuntu | libxmltok1-dev | noble | 1.2-4.1ubuntu2.24.0.4.1+esm2 | fixed |
| Ubuntu | libxmltok1t64 | noble | 1.2-4.1ubuntu2.24.0.4.1+esm2 | fixed |
| Cpe | libexpat | Not reported | Not reported | unknown |
| Cpe | ubuntu_linux | Not reported | Not reported | unknown |
| Cpe | policy_auditor | Not reported | 6.5.1 | fixed |
| Cpe | python | Not reported | 3.6.2 | fixed |
| Alpine | expat | 3.4 | 2.1.1-r2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | expat | source | sid | 2.1.1-2 | not yet assigned | Not reported | Not reported |
| Debian | expat | source | forky | 2.1.1-2 | not yet assigned | Not reported | Not reported |
| Debian | expat | source | trixie | 2.1.1-2 | not yet assigned | Not reported | Not reported |
| Debian | expat | source | bookworm | 2.1.1-2 | not yet assigned | Not reported | Not reported |
| Debian | libxmltok | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Ubuntu | expat | deb | noble | 2.1.1-2 | Not reported | Not reported | Not reported |
| Ubuntu | libxmltok | deb | noble | 1.2-4.1ubuntu2.24.0.4.1+esm2 | Not reported | Not reported | Not reported |
| Ubuntu | libxmltok1-dev | deb | noble | 1.2-4.1ubuntu2.24.0.4.1+esm2 | Not reported | Not reported | Not reported |
| Ubuntu | libxmltok1t64 | deb | noble | 1.2-4.1ubuntu2.24.0.4.1+esm2 | Not reported | Not reported | Not reported |
| Cpe | policy_auditor | cpe | Not reported | 6.5.1 | Not reported | NVD-CVE-2016-4472 | Not reported |
| Cpe | python | cpe | Not reported | 3.6.2 | Not reported | NVD-CVE-2016-4472 | Not reported |
| Alpine | expat | apk | 3.4 | 2.1.1-r2 | Not reported | ALPINE-CVE-2016-4472 | Not reported |
Notes
[bookworm] libxmltok: Minor issue, no runtime dependencies left
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [expat]Unknown
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
- [libexpat1]Unknown
Source package: [expat]
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
- [libexpat1-dev]Unknown
Source package: [expat]
Details (4)
2.5.0-1+deb12u2· amd64 · bookwormFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u2· arm64 · bookwormFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· amd64 · bookworm-securityFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
2.5.0-1+deb12u3· arm64 · bookworm-securityFixed · Fixed:
2.1.1-2usn · expat · debian · bookworm; usn · expat · debian · 12
- [libxmltok1]Unknown
Source package: [libxmltok]
Details (2)
1.2-4· amd64 · bookwormAffected
usn · libxmltok · debian · bookworm; usn · libxmltok · debian · 12
1.2-4· arm64 · bookwormAffected
usn · libxmltok · debian · bookworm; usn · libxmltok · debian · 12
- [libxmltok1-dev]Unknown
Source package: [libxmltok]
Details (2)
1.2-4· amd64 · bookwormAffected
usn · libxmltok · debian · bookworm; usn · libxmltok · debian · 12
1.2-4· arm64 · bookwormAffected
usn · libxmltok · debian · bookworm; usn · libxmltok · debian · 12
[Debian 13 (Trixie)]
- [expat]Unknown
Details (6)
2.7.1-2· amd64 · trixieFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.7.1-2· arm64 · trixieFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityFixed · Fixed:
2.1.1-2usn · expat · debian · 13
- [libexpat1]Unknown
Source package: [expat]
Details (6)
2.7.1-2· amd64 · trixieFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.7.1-2· arm64 · trixieFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityFixed · Fixed:
2.1.1-2usn · expat · debian · 13
- [libexpat1-dev]Unknown
Source package: [expat]
Details (6)
2.7.1-2· amd64 · trixieFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.7.1-2· arm64 · trixieFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.2-1~deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.3-1~deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.8.3-1~deb13u1· arm64 · trixie-securityFixed · Fixed:
2.1.1-2usn · expat · debian · 13
2.9.0-1~deb13u1· amd64 · trixie-securityFixed · Fixed:
2.1.1-2usn · expat · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2020_0497-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2016-4472]
- [https://osv.dev/vulnerability/ALPINE-CVE-2016-4472]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-4472]
- [https://security-tracker.debian.org/tracker/CVE-2016-4472]
- [https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-4472.json]
- [https://ubuntu.com/security/notices/USN-7199-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2016/wid-sec-w-2025-0044.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]