CVE-2026-96674

MEDIUMPre-NVD 4.44.4
EchelonGraph scoreMEDIUM confidence

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

Score 4.4 from GitHub Security Advisory published 2026-09-23. A secondary CVSS source baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-85346 (ENISA EUVD) · GHSA-w2qj-qh9f-h5cc (GitHub Security Advisories)Source: ENISA EUVD

4.4EG
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: 0.1%CVSS: 4.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

alsa-lib through 1.2.16.1 computes combined topology element size using 32-bit arithmetic in src/topology/ctl.c, allowing integer overflow that defeats bounds checks. Attackers can supply crafted topology files that wrap size calculations, causing the decoder to read beyond the topology buffer and potentially leak sensitive data or crash the application.

CVSS v3
4.4
EG Score
4.4MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity44% × 45%
Impact severity (EG Severity): CVSS 4.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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
0.1%
EPSS %ILE
1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.4): severity, escalated by confirmed exploitation. This CVE's 4.4 is its impact severity (EG Severity), not escalated.

EG Severity
4.4 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

September 23, 2026

Last Modified

September 24, 2026

Advisory Details (6)

Auto-updated Sep 23, 2026
Patch available. Sources: github_pr.
Web page

alsa-lib through 1.2.16.1 Integer Overflow via Topology File | Advisories | VulnCheck

https://www.vulncheck.com/advisories/alsa-lib-through-1.2.16.1-integer-overflow-via-topology-file
Web page

GitHub - alsa-project/alsa-lib: The Advanced Linux Sound Architecture (ALSA) - library · GitHub

https://github.com/alsa-project/alsa-lib
Web page

alsa-lib/src/topology/ctl.c at v1.2.16.1 · alsa-project/alsa-lib · GitHub

https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/topology/ctl.c#L1511-L1521
Web page

alsa-lib/src/topology/ctl.c at v1.2.16.1 · alsa-project/alsa-lib · GitHub

https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/topology/ctl.c#L1420-L1430
Web page

alsa-lib/src/topology/ctl.c at v1.2.16.1 · alsa-project/alsa-lib · GitHub

https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/topology/ctl.c#L1316-L1326
GitHub pull request

alsa-lib: security hardening — UCM, conf parser, topology, PCM plugins (6 findings)

Upstream fix in progress (PR #527 · alsa-project/alsa-lib, state=open)

https://github.com/alsa-project/alsa-lib/pull/527

Vendor Advisories for CVE-2026-96674(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
alsa-lib1.2.10-1 ... 1.2.9-2 (22 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
alsa-lib1.2.14-1 ... 1.2.16.1-1~bpo13+1 (10 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
alsa-lib1.2.14-1 ... 1.2.16.1-1~bpo13+1 (9 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 56× 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.

  1. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-10-25 13:48 UTCEG score recompute
  7. 2026-10-23 18:35 UTCEG score recompute
  8. 2026-10-23 18:35 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  9. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-10-22 12:15 UTCEG score recompute
  12. 2026-10-22 12:15 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  13. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  14. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-18 02:57 UTCEG score recompute
  17. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-12 14:40 UTCEG score recompute
  21. 2026-10-11 20:50 UTCVendor advisory
  22. 2026-10-11 20:50 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  23. 2026-10-11 19:11 UTCEG score recompute
  24. 2026-10-11 16:27 UTCEG score recompute
  25. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 65 more
  1. 2026-10-11 13:39 UTCEG score recompute
  2. 2026-10-10 21:54 UTCVendor advisory
  3. 2026-10-10 21:54 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  4. 2026-10-09 22:40 UTCEG score recompute
  5. 2026-10-09 22:40 UTCVendor advisory
  6. 2026-10-09 22:40 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  7. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-09 00:07 UTCEG score recompute
  9. 2026-10-09 00:07 UTCVendor advisory
  10. 2026-10-09 00:07 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  11. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-08 01:34 UTCEG score recompute
  13. 2026-10-08 01:34 UTCVendor advisory
  14. 2026-10-08 01:34 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-07 02:59 UTCEG score recompute
  17. 2026-10-07 02:59 UTCVendor advisory
  18. 2026-10-07 02:59 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  19. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-06 04:26 UTCEG score recompute
  21. 2026-10-06 04:26 UTCVendor advisory
  22. 2026-10-06 04:26 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  23. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-10-05 05:54 UTCEG score recompute
  25. 2026-10-05 05:54 UTCVendor advisory
  26. 2026-10-05 05:54 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  27. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  28. 2026-10-04 07:21 UTCEG score recompute
  29. 2026-10-04 07:21 UTCVendor advisory
  30. 2026-10-04 07:21 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  31. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  32. 2026-10-03 08:49 UTCEG score recompute
  33. 2026-10-03 08:49 UTCVendor advisory
  34. 2026-10-03 08:49 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  35. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  36. 2026-10-02 10:16 UTCEG score recompute
  37. 2026-10-02 10:16 UTCVendor advisory
  38. 2026-10-02 10:16 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  39. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  40. 2026-10-01 11:44 UTCEG score recompute
  41. 2026-10-01 11:44 UTCVendor advisory
  42. 2026-10-01 11:43 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  43. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  44. 2026-09-30 13:07 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  45. 2026-09-29 14:34 UTCEG score recompute
  46. 2026-09-29 14:34 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  47. 2026-09-28 16:01 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  48. 2026-09-27 17:28 UTCEG score recompute
  49. 2026-09-27 17:28 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  50. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  51. 2026-09-26 18:56 UTCEG score recompute
  52. 2026-09-26 18:56 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  53. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  54. 2026-09-25 20:21 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  55. 2026-09-24 21:17 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  56. 2026-09-24 18:55 UTCEG score recompute
  57. 2026-09-24 18:55 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  58. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  59. 2026-09-23 20:23 UTCEG score recompute
  60. 2026-09-23 20:23 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  61. 2026-09-23 19:53 UTCEG score recompute
  62. 2026-09-23 19:53 UTCGHSA enrichmentGHSA-w2qj-qh9f-h5cc · GitHub CVSS 4.4
  63. 2026-09-23 16:17 UTCEG score recompute
  64. 2026-09-23 15:44 UTCEG score recomputeFirst assessed: 4.4 MEDIUM
  65. 2026-09-23 15:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-96674?
CVE-2026-96674 is a medium-severity vulnerability; its CVE record was published on September 23, 2026. alsa-lib through 1.2.16.1 computes combined topology element size using 32-bit arithmetic in src/topology/ctl.c, allowing integer overflow that defeats bounds checks. Attackers can supply crafted topology files that wrap size calculations, causing the decoder to read beyond the topology buffer and…
When was CVE-2026-96674 made public?
CVE-2026-96674 was made public on September 19, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 23, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2026-96674 actively exploited?
CVE-2026-96674 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96674?
CVE-2026-96674 has a CVSS base score of 4.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-96674?
A fix for CVE-2026-96674 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-96674 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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