CVE-2025-5915

MEDIUMNVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.6 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 94% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.6Exploit: NoneExposed: 0

A fix is available — apply it.

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber (LZSS) window. This means the library may attempt to read beyond the allocated memory buffer, which can result in unpredictable program behavior, crashes (denial of service), or the disclosure of sensitive information from adjacent memory regions.

CVSS v3
6.6
EG Score
6.6(medium)
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
Severity66% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
5.9%
KEV
Not listed

Published

June 9, 2025

Last Modified

June 30, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
Patch available. Sources: redhat, github_pr, github_release.
github_release Patch Available

Libarchive 3.8.0

Patch available: libarchive/libarchive v3.8.0

https://github.com/libarchive/libarchive/releases/tag/v3.8.0
github_pr

rar: Fix heap-buffer-overflow

Fix merged in libarchive/libarchive PR #2599 on 2025-05-11 — awaiting tagged release

https://github.com/libarchive/libarchive/pull/2599
redhat

2370865 – (CVE-2025-5915) CVE-2025-5915 libarchive: Heap buffer over read in copy_from_lzss_window() at archive_read_support_format_rar.c

https://bugzilla.redhat.com/show_bug.cgi?id=2370865
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2025-5915

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibarchive13t64 (3.7.2-2ubuntu0.5) @ noble2026-05-30ubuntu

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.

Weakness Classification(1)

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

All Vendor Advisories

(2)

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 14× in last 7d / 46× 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.

  1. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-24 14:17 UTCEPSS rescore
  3. 2026-07-24 04:11 UTCOSV refresh
  4. 2026-07-23 14:18 UTCEPSS rescore
  5. 2026-07-23 14:18 UTCEPSS rescore
  6. 2026-07-23 02:59 UTCEG score recompute▲ 2.70
  7. 2026-07-22 14:08 UTCEPSS rescore
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  20. 2026-07-13 22:29 UTCEPSS rescore
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  24. 2026-07-09 19:09 UTCEPSS rescore
  25. 2026-07-08 15:15 UTCEPSS rescore
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  1. 2026-07-07 13:46 UTCEPSS rescore
  2. 2026-07-06 23:35 UTCOSV refresh
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
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  11. 2026-07-01 15:06 UTCEPSS rescore
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  13. 2026-06-30 23:22 UTCEPSS rescore
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  18. 2026-06-28 04:56 UTCEPSS rescore
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  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-25 13:49 UTCEPSS rescore
  22. 2026-06-24 14:04 UTCEPSS rescore
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  24. 2026-06-23 21:32 UTCEPSS rescore
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  26. 2026-06-22 14:25 UTCEPSS rescore
  27. 2026-06-21 14:56 UTCEPSS rescore
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  33. 2026-06-18 17:52 UTCEPSS rescore
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  35. 2026-06-18 10:35 UTCOSV refresh
  36. 2026-06-17 17:52 UTCEPSS rescore
  37. 2026-06-16 17:52 UTCEPSS rescore
  38. 2026-06-15 17:48 UTCEPSS rescore
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  40. 2026-06-14 23:18 UTCEPSS rescore
  41. 2026-06-13 23:00 UTCEPSS rescore
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  44. 2026-06-11 14:00 UTCEPSS rescore
  45. 2026-06-10 22:18 UTCEPSS rescore
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  47. 2026-06-10 13:22 UTCEPSS rescore
  48. 2026-06-08 14:17 UTCEPSS rescore
  49. 2026-06-08 14:16 UTCEPSS rescore
  50. 2026-06-07 15:24 UTCEPSS rescore
  51. 2026-06-07 15:24 UTCEPSS rescore
  52. 2026-06-06 13:47 UTCEPSS rescore
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  54. 2026-06-05 22:46 UTCEPSS rescore
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  66. 2026-05-31 00:16 UTCEPSS rescore
  67. 2026-05-31 00:16 UTCEPSS rescore
  68. 2026-05-30 04:01 UTCEG score recompute
  69. 2026-05-30 04:01 UTCVendor advisory
  70. 2026-05-30 04:01 UTCGHSA enrichment
  71. 2026-05-29 14:24 UTCOSV refresh
  72. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-5915?
CVE-2025-5915 is a medium vulnerability published on June 9, 2025. A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber (LZSS) window. This means the library may attempt to read beyond the allocated memory buffer, which can…
When was CVE-2025-5915 disclosed?
CVE-2025-5915 was first published in the National Vulnerability Database on June 9, 2025, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-5915 actively exploited?
CVE-2025-5915 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-5915?
CVE-2025-5915 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2025-5915?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-5915, 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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