CVE-2026-43077

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

crypto: algif_aead - Fix minimum RX size check for decryption

The check for the minimum receive buffer size did not take the tag size into account during decryption. Fix this by adding the required extra length.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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 (value × EchelonGraph’s weight)
Severity55% × 45%
The EG Score, 5.5 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 6, 2026

Last Modified

May 20, 2026

Advisory Details (8)

Auto-updated Aug 2, 2026
Patch available.
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd427dd84f224309afbcc2cb67c7bb770a01265c
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e86ab1e5661386a874fbb8551f0c04b8e9f8ad22
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/af2fa2fbbced26129813274b8b3f7705f280e174
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/78cea133daf721698876e56135049a96d39d610a
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/74a66fdb5282d89e348b00c42cfca3a936946d94
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d14bd48e3a77091cbce637a12c2ae31b4a1687c
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3afdc15d6173614d7d834517d9b65e7aa5a08548
Web page

crypto: algif_aead - Fix minimum RX size check for decryption - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1c76b5675119f694458293a2a81f40731c69bd32

Patch Availability(31)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.179.189~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1015.15) @ questing2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1025.25) @ noble2026-08-23ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.179.151) @ jammy2026-08-23ubuntu
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1018.19) @ questing2026-08-23ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1143.156~18.04.1) @ bionic2026-08-23ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.231.251~18.04.1) @ bionic2026-08-23ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1114.123~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1114.112) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1059.65~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.250.262~16.04.1) @ xenial2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1106.112~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1026.26) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1074 (5.15.0-1074.78) @ jammy2026-08-23ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-29.29) @ questing2026-08-23ubuntu
redhatkernel-0:5.14.0-70.178.1.el9_02026-05-06redhat
redhatkernel-rt-0:5.14.0-70.178.1.rt21.250.el9_02026-05-06redhat
redhatkernel-0:4.18.0-372.191.1.el8_62026-05-06redhat
redhatkernel-rt-0:5.14.0-284.169.1.rt14.454.el9_22026-05-06redhat
redhatkernel-0:5.14.0-427.124.1.el9_42026-05-06redhat
redhatkernel-0:4.18.0-305.190.1.el8_42026-05-06redhat
redhatkernel-0:5.14.0-570.112.1.el9_62026-05-06redhat
redhatkernel-0:5.14.0-284.169.1.el9_22026-05-05redhat
redhatkernel-0:6.12.0-55.71.1.el10_02026-05-05redhat
redhatkernel-0:4.18.0-477.139.1.el8_82026-05-05redhat
redhatkernel-rt-0:4.18.0-553.123.1.rt7.464.el8_102026-05-05redhat
redhatkernel-0:4.18.0-553.123.1.el8_102026-05-05redhat
redhatkernel-0:5.14.0-611.54.1.el9_72026-05-04redhat
redhatkernel-0:6.12.0-124.55.1.el10_12026-05-04redhat
linuxKernel @ 5.10.254 (fixes >=4.14.0)—osv

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 rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)
  • every version up to 5.10.257-1: fixed in 5.10.257-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)
  • every version up to 6.1.170-1: fixed in 6.1.170-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)
  • every version up to 6.12.85-1: fixed in 6.12.85-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (130 versions)
  • every version up to 6.19.14-1: fixed in 6.19.14-1
—

Additional Vendor Advisories

(12)

Data Freshness Timeline

(refreshed 11× in last 7d / 26× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 219 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 119 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  4. 2026-10-12 16:06 UTCEG score recompute
  5. 2026-10-11 19:48 UTCEG score recompute
  6. 2026-10-11 17:03 UTCEG score recompute
  7. 2026-10-11 14:28 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  19. 2026-09-30 10:11 UTCOSV refresh
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 75 more
  1. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-09-11 16:53 UTCOSV refresh
  5. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-08-23 20:27 UTCEG score recompute
  21. 2026-08-23 20:27 UTCVendor advisory
  22. 2026-08-23 20:27 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  23. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  28. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  29. 2026-08-17 13:00 UTCEG score recompute
  30. 2026-08-17 13:00 UTCVendor advisory
  31. 2026-08-17 13:00 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  32. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  33. 2026-08-16 04:56 UTCEG score recompute
  34. 2026-08-16 04:56 UTCVendor advisory
  35. 2026-08-16 04:56 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  36. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  37. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  38. 2026-08-14 03:31 UTCEG score recompute
  39. 2026-08-14 03:31 UTCVendor advisory
  40. 2026-08-14 03:31 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  41. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-08-12 18:02 UTCEG score recompute
  43. 2026-08-12 18:02 UTCVendor advisory
  44. 2026-08-12 18:02 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  45. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-08-11 16:01 UTCEG score recompute
  47. 2026-08-11 16:01 UTCVendor advisory
  48. 2026-08-11 16:01 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  49. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  50. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  51. 2026-08-10 07:54 UTCEG score recompute
  52. 2026-08-10 07:54 UTCVendor advisory
  53. 2026-08-10 07:54 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  54. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-08-09 05:55 UTCEG score recompute
  56. 2026-08-09 05:55 UTCVendor advisory
  57. 2026-08-09 05:55 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  58. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-08-08 03:55 UTCEG score recompute
  60. 2026-08-08 03:55 UTCVendor advisory
  61. 2026-08-08 03:55 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  62. 2026-08-07 01:55 UTCEG score recompute
  63. 2026-08-07 01:55 UTCVendor advisory
  64. 2026-08-07 01:55 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  65. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  66. 2026-08-05 22:24 UTCEG score recompute
  67. 2026-08-05 22:24 UTCVendor advisory
  68. 2026-08-05 22:23 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  69. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  70. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  72. 2026-08-03 19:55 UTCEG score recompute
  73. 2026-08-03 19:55 UTCVendor advisory
  74. 2026-08-03 19:55 UTCGHSA enrichmentGHSA-6m8x-q95v-ph67 · GitHub CVSS 5.5
  75. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

Frequently asked(5)

What is CVE-2026-43077?
CVE-2026-43077 is a medium-severity vulnerability; its CVE record was published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Fix minimum RX size check for decryption The check for the minimum receive buffer size did not take the tag size into account during decryption. Fix this by adding the required extra length.
When was the CVE record for CVE-2026-43077 published?
The CVE record for CVE-2026-43077 was published on May 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 20, 2026; the record at its source may have been updated since.
Is CVE-2026-43077 actively exploited?
CVE-2026-43077 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43077?
CVE-2026-43077 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43077?
A fix for CVE-2026-43077 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-43077 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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