CVE-2026-4424

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-03-19. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

March 19, 2026

Last Modified

August 24, 2026

Advisory Details (10)

Auto-updated Apr 29, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.6 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:8866
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:8865
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:8864
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:8534
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support.

https://access.redhat.com/errata/RHSA-2026:8521
redhat Patch Available

Affected: Red Hat Enterprise Linux 7 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2026:8517
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:8510
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:8492
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:11768
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:10065

Vendor Advisories for CVE-2026-4424(20)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhaiis/model-opt-cuda-rhel9:17806819842026-06-10redhat
redhatrhcos-413.92.202605271328-02026-06-04redhat
redhatrhcos-4.19.9.6.202605201155-02026-05-27redhat
redhatrhaiis/vllm-rocm-rhel9:17792236512026-05-20redhat
redhatrhaiis/vllm-cuda-rhel9:17792236542026-05-20redhat
redhatrhcos-417.94.202605112123-02026-05-20redhat
redhatrhcos-414.92.202605060243-02026-05-13redhat
redhatrhcos-415.92.202605060220-02026-05-13redhat
redhatrhaiis/vllm-spyre-rhel9:17782445462026-05-12redhat
redhatrhaiis/vllm-rocm-rhel9:17782445312026-05-11redhat
redhatrhaiis/vllm-cuda-rhel9:17782746662026-05-11redhat
redhatrhaiis/model-opt-cuda-rhel9:17782445592026-05-11redhat
redhatrhcos-418.94.202604240015-02026-05-11redhat
redhatrhcos-412.86.202604281506-02026-05-08redhat
redhatdiscovery/discovery-ui-rhel9:17781567562026-05-07redhat
redhatrhpam-7/rhpam-smartrouter-rhel8:7.13.5-4.17773257082026-05-05redhat
redhatrhcos-416.94.202604211449-02026-04-30redhat
redhatrhui5/rhua-tp-rhel9:17774595042026-04-29redhat
redhatrhui5/rhua-rhel9:17768688422026-04-23redhat
redhatlibarchive-0:3.3.3-1.el8_4.22026-04-22redhat
redhatinsights-proxy/insights-proxy-container-rhel9:17768689612026-04-22redhat
redhatlibarchive-0:3.5.3-5.el9_42026-04-20redhat
redhatlibarchive-0:3.5.3-7.el9_6.12026-04-20redhat
redhatlibarchive-0:3.3.3-5.el8_8.22026-04-20redhat
redhatlibarchive-0:3.7.7-5.el10_02026-04-20redhat
redhatlibarchive-0:3.5.3-2.el9_0.42026-04-20redhat
redhatlibarchive-0:3.5.3-5.el9_2.22026-04-20redhat
redhatlibarchive-main-3.8.7-1.hum12026-04-20redhat
redhatlibarchive-0:3.3.3-6.el8_6.12026-04-20redhat
redhatlibarchive-0:3.3.3-7.el8_102026-04-16redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libarchive3.4.3-2, 3.4.3-2+deb11u1, 3.4.3-2+deb11u2, 3.4.3-2+deb11u33.4.3-2+deb11u4—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libarchive3.6.2-1, 3.6.2-1+deb12u1, 3.6.2-1+deb12u2, 3.6.2-1+deb12u33.6.2-1+deb12u4—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libarchive3.7.4-43.7.4-4+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libarchive3.7.4-4, 3.8.4-1, 3.8.5-1, 3.8.6-13.8.7-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(5)

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 8× in last 7d / 69× 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 175 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 12:27 UTCEG score recompute
  3. 2026-08-24 12:27 UTCVendor advisory
  4. 2026-08-24 12:27 UTCGHSA enrichment
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-21 23:49 UTCEPSS rescore
  7. 2026-08-20 22:55 UTCEPSS rescore
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 11:11 UTCEG score recompute
  12. 2026-08-16 11:11 UTCVendor advisory
  13. 2026-08-16 11:11 UTCGHSA enrichment
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-15 01:30 UTCEPSS rescore
  16. 2026-08-14 19:54 UTCVendor advisory
  17. 2026-08-14 19:54 UTCGHSA enrichment
  18. 2026-08-14 07:21 UTCEG score recompute
  19. 2026-08-14 07:21 UTCVendor advisory
  20. 2026-08-14 07:21 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-12 22:05 UTCEG score recompute
  23. 2026-08-12 22:05 UTCVendor advisory
  24. 2026-08-12 22:05 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
Show 75 more
  1. 2026-08-11 21:28 UTCEG score recompute
  2. 2026-08-11 21:28 UTCVendor advisory
  3. 2026-08-11 21:28 UTCGHSA enrichment
  4. 2026-08-11 04:32 UTCEG score recompute
  5. 2026-08-11 04:32 UTCVendor advisory
  6. 2026-08-11 04:32 UTCGHSA enrichment
  7. 2026-08-11 00:00 UTCEPSS rescore
  8. 2026-08-10 07:45 UTCVendor advisory
  9. 2026-08-10 07:45 UTCGHSA enrichment
  10. 2026-08-09 19:20 UTCEG score recompute
  11. 2026-08-09 19:20 UTCVendor advisory
  12. 2026-08-09 19:19 UTCGHSA enrichment
  13. 2026-08-09 13:46 UTCEPSS rescore
  14. 2026-08-09 06:54 UTCEG score recompute
  15. 2026-08-09 06:54 UTCVendor advisory
  16. 2026-08-09 06:54 UTCGHSA enrichment
  17. 2026-08-08 16:37 UTCEPSS rescore
  18. 2026-08-08 05:49 UTCVendor advisory
  19. 2026-08-08 05:49 UTCGHSA enrichment
  20. 2026-08-07 17:24 UTCEG score recompute
  21. 2026-08-07 17:24 UTCVendor advisory
  22. 2026-08-07 17:24 UTCGHSA enrichment
  23. 2026-08-06 19:26 UTCEG score recompute
  24. 2026-08-06 19:26 UTCVendor advisory
  25. 2026-08-06 19:26 UTCGHSA enrichment
  26. 2026-08-06 13:47 UTCEPSS rescore
  27. 2026-08-06 01:34 UTCEG score recompute
  28. 2026-08-06 01:34 UTCVendor advisory
  29. 2026-08-06 01:34 UTCGHSA enrichment
  30. 2026-08-05 19:17 UTCEPSS rescore
  31. 2026-08-04 15:10 UTCEPSS rescore
  32. 2026-08-04 10:39 UTCEPSS rescore
  33. 2026-08-04 00:43 UTCEG score recompute
  34. 2026-08-04 00:43 UTCVendor advisory
  35. 2026-08-04 00:43 UTCGHSA enrichment
  36. 2026-08-03 10:36 UTCEPSS rescore
  37. 2026-08-02 16:35 UTCEG score recompute
  38. 2026-08-02 16:35 UTCVendor advisory
  39. 2026-08-02 16:35 UTCGHSA enrichment
  40. 2026-08-02 02:27 UTCEPSS rescore
  41. 2026-08-01 04:16 UTCEPSS rescore
  42. 2026-07-30 16:28 UTCEPSS rescore
  43. 2026-07-30 01:30 UTCEPSS rescore
  44. 2026-07-28 15:37 UTCEPSS rescore
  45. 2026-07-26 14:54 UTCEPSS rescore
  46. 2026-07-25 14:18 UTCEPSS rescore
  47. 2026-07-24 14:18 UTCEPSS rescore
  48. 2026-07-23 14:18 UTCEPSS rescore
  49. 2026-07-23 03:14 UTCEG score recompute
  50. 2026-07-22 14:08 UTCEPSS rescore
  51. 2026-07-21 15:25 UTCEPSS rescore
  52. 2026-07-20 17:08 UTCEPSS rescore
  53. 2026-07-19 14:31 UTCEPSS rescore
  54. 2026-07-19 14:31 UTCEPSS rescore
  55. 2026-07-19 02:29 UTCEPSS rescore
  56. 2026-07-18 10:04 UTCEPSS rescore
  57. 2026-07-16 17:03 UTCEPSS rescore
  58. 2026-07-15 16:57 UTCEPSS rescore
  59. 2026-07-15 16:57 UTCEPSS rescore
  60. 2026-07-15 02:00 UTCEPSS rescore
  61. 2026-07-15 02:00 UTCEPSS rescore
  62. 2026-07-13 22:31 UTCEPSS rescore
  63. 2026-07-13 06:13 UTCEPSS rescore
  64. 2026-07-12 05:46 UTCEPSS rescore
  65. 2026-07-11 08:27 UTCEPSS rescore
  66. 2026-07-09 19:10 UTCEPSS rescore
  67. 2026-07-08 15:16 UTCEPSS rescore
  68. 2026-07-07 13:46 UTCEPSS rescore
  69. 2026-07-06 16:27 UTCEPSS rescore
  70. 2026-07-06 02:23 UTCEPSS rescore
  71. 2026-07-05 02:30 UTCEPSS rescore
  72. 2026-07-04 06:31 UTCEPSS rescore
  73. 2026-07-01 15:07 UTCEPSS rescore
  74. 2026-06-30 23:22 UTCEPSS rescore
  75. 2026-06-29 14:06 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-4424?
CVE-2026-4424 is a high vulnerability published on March 19, 2026. A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR…
When was CVE-2026-4424 disclosed?
CVE-2026-4424 was first published in the National Vulnerability Database on March 19, 2026, with the most recent update on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4424 actively exploited?
CVE-2026-4424 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 33.2% of all scored CVEs.
What is the CVSS score of CVE-2026-4424?
CVE-2026-4424 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-4424?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4424, 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-2026-4424

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