CVE-2015-7499

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:N/A:N. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 6.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS v2: 5.0Exploit: None knownExposed: 0

A fix is available — apply it.

Heap-based buffer overflow in the xmlGROW function in parser.c in libxml2 before 2.9.3 allows context-dependent attackers to obtain sensitive process memory information via unspecified vectors.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
30(Track)
EG Risk 30/100SSVC: 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
Severity50% × 45%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
93%
KEV
Not listed

Published

December 15, 2015

Last Modified

May 6, 2026

References (50)

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibxml2 (2.9.2+dfsg1-3ubuntu0.3) @ vivid2026-05-22ubuntu
ubuntulibxml2 (2.9.2+zdfsg1-4ubuntu0.2) @ wily2026-05-22ubuntu
redhatlibxml22016-05-17redhat
redhatlibxml2-0:2.7.6-20.el6_7.12015-12-07redhat
redhatlibxml2-0:2.9.1-6.el7_2.22015-12-07redhat

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

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
nokogiri1.6.0 ... 1.6.7.rc4 (24 versions)1.6.7.2—

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 42× 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 106 total refreshes for this CVE.

  1. 2026-07-26 14:50 UTCEPSS rescore
  2. 2026-07-26 13:55 UTCEG score recompute▲ 5.00
  3. 2026-07-25 14:13 UTCEPSS rescore
  4. 2026-07-24 14:13 UTCEPSS rescore
  5. 2026-07-23 14:14 UTCEPSS rescore
  6. 2026-07-23 01:19 UTCEG score recompute
  7. 2026-07-23 00:21 UTCEG score recompute
  8. 2026-07-22 21:59 UTCEG score recompute
  9. 2026-07-22 14:04 UTCEPSS rescore
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  23. 2026-07-13 22:26 UTCEPSS rescore
  24. 2026-07-12 12:38 UTCOSV refresh
  25. 2026-07-12 05:42 UTCEPSS rescore
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  1. 2026-07-11 08:23 UTCEPSS rescore
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  22. 2026-06-24 14:02 UTCEPSS rescore
  23. 2026-06-23 21:30 UTCEPSS rescore
  24. 2026-06-23 18:20 UTCOSV refresh
  25. 2026-06-22 14:23 UTCEPSS rescore
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  27. 2026-06-21 14:54 UTCEPSS rescore
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  45. 2026-06-10 22:15 UTCEPSS rescore
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  47. 2026-06-08 14:14 UTCEPSS rescore
  48. 2026-06-07 15:22 UTCEPSS rescore
  49. 2026-06-07 01:29 UTCOSV refresh
  50. 2026-06-06 13:45 UTCEPSS rescore
  51. 2026-06-05 22:44 UTCEPSS rescore
  52. 2026-06-05 06:08 UTCEPSS rescore
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  54. 2026-06-04 13:10 UTCEPSS rescore
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  70. 2026-05-24 16:43 UTCEPSS rescore
  71. 2026-05-22 22:13 UTCEG score recompute
  72. 2026-05-22 22:13 UTCVendor advisory
  73. 2026-05-22 21:15 UTCEPSS rescore
  74. 2026-05-21 22:40 UTCEPSS rescore
  75. 2026-05-20 22:37 UTCEPSS rescore

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2015-7499?
CVE-2015-7499 is a medium vulnerability published on December 15, 2015. Heap-based buffer overflow in the xmlGROW function in parser.c in libxml2 before 2.9.3 allows context-dependent attackers to obtain sensitive process memory information via unspecified vectors.
When was CVE-2015-7499 disclosed?
CVE-2015-7499 was first published in the National Vulnerability Database on December 15, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-7499 actively exploited?
CVE-2015-7499 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.0% of all scored CVEs.
How do I remediate CVE-2015-7499?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-7499, 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.

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