CVE-2026-71225

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-05. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large inputs. This can lead to a significant weakening of data confidentiality, as the repeated IV use can expose relationships in encrypted plaintext, and may also affect data integrity by causing incorrect cryptographic processing.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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
Severity65% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

September 21, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
Patch available. Sources: redhat.
redhat

2462011 – (CVE-2026-71225) CVE-2026-71225 libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

https://bugzilla.redhat.com/show_bug.cgi?id=2462011
redhat Patch Available

CVE-2026-71225 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-71225

Vendor Advisories for CVE-2026-71225(7)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatlibkcapi-0:1.5.0-6.el10_02026-09-21redhat
redhatlibkcapi-0:1.5.1-1.el10_22026-09-14redhat
redhatlibkcapi-0:1.4.0-3.el8_102026-09-14redhat
redhatlibkcapi-0:1.4.0-3.el9_82026-09-14redhat
redhatlibkcapi-main-1.5.1-0.1.hum12026-08-19redhat

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

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.10.1 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.10.1 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.10.1 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi—
  • 0.10.1 up to 1.5.1-r0: fixed in 1.5.1-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.2.1-1 ... 1.4.0-1 (6 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.4.0-1, 1.4.0-2, 1.5.1-1, 1.5.1-2
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.4.0-1, 1.4.0-2, 1.5.1-1, 1.5.1-2
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libkcapi1.4.0-1, 1.4.0-2
  • every version up to 1.5.1-1: fixed in 1.5.1-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 97× 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 209 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Same product

2 shown

Alpine:v3.21:libkcapi

Same vendor

2 shown

redhat:RHSA-2026:56985

Frequently asked(5)

What is CVE-2026-71225?
CVE-2026-71225 is a medium vulnerability published on August 5, 2026. A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could…
When was CVE-2026-71225 disclosed?
CVE-2026-71225 was first published on August 5, 2026, with the most recent update on September 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71225 actively exploited?
CVE-2026-71225 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71225?
CVE-2026-71225 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-71225?
A fix for CVE-2026-71225 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71225 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-71225

Explore →

Is Your Infrastructure Affected by CVE-2026-71225?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs