CVE-2016-0718

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 13%CVSS: 9.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
13%
EPSS %ILE
96%
KEV
Not listed

Published

May 26, 2016

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
No patch confirmed yet.
generic
http://rhn.redhat.com/errata/RHSA-2016-2824.html
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/141350/ESET-Endpoint-Antivirus-6-Remote-Code-Execution.html
generic🟡 PoC Available

Full Disclosure: CVE-2016-9892 - Remote Code Execution as Root via ESET Endpoint Antivirus 6

http://seclists.org/fulldisclosure/2017/Feb/68

Vendor Advisories for CVE-2016-0718(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibxmltok1-dev (1.2-3ubuntu0.16.04.1~esm2) @ xenial2026-05-20ubuntu
ubuntulibexpat1 (2.1.0-7ubuntu0.15.10.1) @ wily2026-05-20ubuntu
ubuntulibxmltok1-dev (1.2-4ubuntu0.20.04.1~esm4) @ focal2026-05-20ubuntu
ubuntufirefox-testsuite (48.0+build2-0ubuntu0.16.04.1) @ xenial2026-05-20ubuntu
ubuntulibxmlrpc-core-c3 (1.16.33-3.1ubuntu5.2) @ precise2026-05-20ubuntu
redhathttpd2018-08-16redhat
redhatexpat-0:2.1.0-10.el7_32016-11-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(9 across 7 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
expat—2.1.1-2—
libxmltok1.2-4, 1.2-4.1, 1.2-4.1~exp1, 1.2-4.2——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
expat—2.1.1-2—
libxmltok1.2-4, 1.2-4.1, 1.2-4.1~exp1, 1.2-4.2——
Alpine:v3.4(1)
PackageVulnerable rangeFixed inDependents
expat2.0.1-r0 ... 2.1.1-r0 (11 versions)2.1.1-r1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
expat—2.1.1-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
expat—2.1.1-2—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
expat2.1.0-1, 2.1.0-1+deb7u1, 2.1.0-1+deb7u22.1.0-1+deb7u3—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
expat2.1.0-6, 2.1.0-6+deb8u12.1.0-6+deb8u2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-08-20 22:50 UTCEPSS rescore
  2. 2026-08-19 16:59 UTCEPSS rescore
  3. 2026-08-18 13:43 UTCEPSS rescore
  4. 2026-08-16 14:51 UTCEPSS rescore
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  9. 2026-08-10 18:08 UTCOSV refresh
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  20. 2026-07-26 14:50 UTCEPSS rescore
  21. 2026-07-25 18:01 UTCOSV refresh
  22. 2026-07-25 14:13 UTCEPSS rescore
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  24. 2026-07-23 14:14 UTCEPSS rescore
  25. 2026-07-23 01:20 UTCEG score recompute
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  1. 2026-07-23 00:22 UTCEG score recompute
  2. 2026-07-22 22:00 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-21 15:21 UTCEPSS rescore
  5. 2026-07-21 15:21 UTCEPSS rescore
  6. 2026-07-20 17:03 UTCEPSS rescore
  7. 2026-07-19 02:26 UTCEPSS rescore
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  9. 2026-07-18 10:00 UTCEPSS rescore
  10. 2026-07-16 16:59 UTCEPSS rescore
  11. 2026-07-15 16:54 UTCEPSS rescore
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  16. 2026-07-12 05:42 UTCEPSS rescore
  17. 2026-07-11 08:23 UTCEPSS rescore
  18. 2026-07-09 19:05 UTCEPSS rescore
  19. 2026-07-09 19:05 UTCEPSS rescore
  20. 2026-07-08 15:10 UTCEPSS rescore
  21. 2026-07-08 12:45 UTCOSV refresh
  22. 2026-07-07 13:42 UTCEPSS rescore
  23. 2026-07-07 13:42 UTCEPSS rescore
  24. 2026-07-06 16:24 UTCEPSS rescore
  25. 2026-07-06 02:20 UTCEPSS rescore
  26. 2026-07-05 02:26 UTCEPSS rescore
  27. 2026-07-04 06:28 UTCEPSS rescore
  28. 2026-07-01 15:02 UTCEPSS rescore
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  31. 2026-06-29 14:03 UTCEPSS rescore
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  43. 2026-06-21 01:57 UTCEPSS rescore
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  45. 2026-06-20 00:19 UTCOSV refresh
  46. 2026-06-19 19:23 UTCEPSS rescore
  47. 2026-06-19 19:23 UTCEPSS rescore
  48. 2026-06-18 17:50 UTCEPSS rescore
  49. 2026-06-17 17:50 UTCEPSS rescore
  50. 2026-06-17 17:49 UTCEPSS rescore
  51. 2026-06-16 17:50 UTCEPSS rescore
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  54. 2026-06-14 23:14 UTCEPSS rescore
  55. 2026-06-13 22:57 UTCEPSS rescore
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  70. 2026-06-02 20:10 UTCEPSS rescore
  71. 2026-06-01 13:49 UTCEPSS rescore
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  73. 2026-05-31 22:28 UTCEPSS rescore
  74. 2026-05-31 22:28 UTCEPSS rescore
  75. 2026-05-31 02:55 UTCOSV refresh

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2016-0718?
CVE-2016-0718 is a critical vulnerability published on May 26, 2016. Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.
When was CVE-2016-0718 disclosed?
CVE-2016-0718 was first published in the National Vulnerability Database on May 26, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-0718 actively exploited?
CVE-2016-0718 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13% probability of exploitation in the next 30 days, which ranks it in the top 3.9% of all scored CVEs.
What is the CVSS score of CVE-2016-0718?
CVE-2016-0718 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-0718?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-0718, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-0718

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