CVE-2026-1940

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2% (14th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 5.1 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-03-24) is not newer than that change (2026-06-17), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2026-14551 (ENISA EUVD) · GHSA-9wvw-r6fm-6wwv (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 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
0.2%
EPSS %ILE
14th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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

March 23, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated May 4, 2026
Patch available. Sources: redhat.
Web page

CVE-2026-1940

https://security-tracker.debian.org/tracker/CVE-2026-1940
Red Hat

2436932 – (CVE-2026-1940) CVE-2026-1940 gstreamer: incomplete fix of CVE-2026-1940

https://bugzilla.redhat.com/show_bug.cgi?id=2436932
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-1940

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.18.4-2 ... 1.29.2-1 (90 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.22.0-5 ... 1.29.2-1 (75 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.2-1, 1.26.2-1+deb13u1
  • every version up to 1.26.2-1+deb13u2: fixed in 1.26.2-1+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.28.0-1 (18 versions)
  • every version up to 1.28.1-1: fixed in 1.28.1-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 41× 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 244 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 144 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-11-01 15:13 UTCEG score recompute
  3. 2026-11-01 15:13 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub severity MODERATE · GitHub CVSS 5.1
  4. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  6. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  7. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-25 14:44 UTCEG score recompute
  12. 2026-10-25 04:28 UTCEG score recompute
  13. 2026-10-25 04:28 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  14. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  16. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  17. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  20. 2026-10-18 03:58 UTCEG score recompute
  21. 2026-10-17 17:43 UTCEG score recompute
  22. 2026-10-17 17:43 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  23. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
Show 75 more
  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-10-12 16:26 UTCEG score recompute
  5. 2026-10-11 20:06 UTCEG score recompute
  6. 2026-10-11 17:19 UTCEG score recompute
  7. 2026-10-11 14:51 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-11 06:55 UTCOSV refresh
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-29 15:21 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  23. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  24. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-09-21 19:49 UTCOSV refresh
  26. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  27. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  28. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  29. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  30. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  31. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  32. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  33. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  34. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  35. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  36. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  37. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  39. 2026-09-02 16:08 UTCOSV refresh
  40. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  41. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  42. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  43. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  44. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  47. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  48. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  49. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  50. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  52. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  53. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  54. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  55. 2026-08-16 10:44 UTCEG score recompute
  56. 2026-08-16 10:44 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  57. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  58. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-08-14 19:45 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  60. 2026-08-14 06:55 UTCEG score recompute
  61. 2026-08-14 06:55 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  62. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  63. 2026-08-12 21:38 UTCEG score recompute
  64. 2026-08-12 21:38 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  65. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  66. 2026-08-11 21:12 UTCEG score recompute
  67. 2026-08-11 21:12 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  68. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  69. 2026-08-11 04:16 UTCEG score recompute
  70. 2026-08-11 04:16 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  71. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  72. 2026-08-10 05:35 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  73. 2026-08-09 18:04 UTCEG score recompute
  74. 2026-08-09 18:04 UTCGHSA enrichmentGHSA-9wvw-r6fm-6wwv · GitHub CVSS 5.1
  75. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile

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Frequently asked(5)

What is CVE-2026-1940?
CVE-2026-1940 is a high-severity vulnerability; its CVE record was published on March 23, 2026. An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser…
When was CVE-2026-1940 made public?
CVE-2026-1940 was made public on February 25, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on March 23, 2026. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-1940 actively exploited?
CVE-2026-1940 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (14th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-1940?
CVE-2026-1940 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-1940?
A fix for CVE-2026-1940 is available: update to the fixed version the vendor names in its advisory.

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