CVE-2026-46471

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.2% (8th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from CISA-ADP (Vulnrichment) CVSS v3.1
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS
Elevated

Also known asEUVD-2026-102936 (ENISA EUVD) · GHSA-5vvw-9383-fwx7 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

An issue was discovered in GStreamer gst-plugins-good before 1.28.2. While parsing an MP4 file, the isomp4 plugin's qtdemux_parse_uuid function may read past the end of a heap-allocated buffer, allowing an attacker to disclose heap memory contents.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

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)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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
8th
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 (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.CISA-ADP (Vulnrichment) CVSS v3.1 · CVSS v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. 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 low or medium mission impact; Track* at high (mission-essential systems).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 low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (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

October 16, 2026

Last Modified

October 19, 2026

Advisory Details (2)

Auto-updated Oct 25, 2026
🔬 Proof of concept available. Patch available.
Web page🟡 PoC Available

advisories/2026/ATREDIS-2026-0004.md at master · atredispartners/advisories · GitHub

https://github.com/atredispartners/advisories/blob/master/2026/ATREDIS-2026-0004.md
Web page

GStreamer Security Advisory

https://gstreamer.freedesktop.org/security/sa-2026-0002.html

Vendor Advisories for CVE-2026-46471(1)

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
gst-plugins-good1.01.22.0-5 ... 1.29.2-1 (77 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-good1.01.26.10-1 ... 1.29.2-1 (33 versions)
  • every version on: no fix on record
—
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 7× in last 7d / 34× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  4. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  6. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  7. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  8. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  9. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  10. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  11. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  17. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-10-25 14:25 UTCEchelonGraph re-scored
  21. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  23. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 15 more
  1. 2026-10-19 17:35 UTCEchelonGraph re-scored
  2. 2026-10-19 17:35 UTCGHSA enrichmentGHSA-5vvw-9383-fwx7
  3. 2026-10-19 16:37 UTCEchelonGraph re-scored
  4. 2026-10-19 16:37 UTCGHSA enrichmentGHSA-5vvw-9383-fwx7
  5. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-10-19 15:37 UTCEchelonGraph re-scoredFirst assessed: 5.5 MEDIUM
  7. 2026-10-19 15:37 UTCGHSA enrichmentGHSA-5vvw-9383-fwx7
  8. 2026-10-19 15:37 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  9. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  10. 2026-10-18 03:37 UTCEchelonGraph re-scored
  11. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-10-16 20:14 UTCGHSA enrichmentGHSA-5vvw-9383-fwx7
  13. 2026-10-16 16:30 UTCNVD update
  14. 2026-10-16 16:04 UTCEchelonGraph re-scored
  15. 2026-10-16 16:02 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-46471?
CVE-2026-46471 is a medium-severity vulnerability; its CVE record was published on October 16, 2026. An issue was discovered in GStreamer gst-plugins-good before 1.28.2. While parsing an MP4 file, the isomp4 plugin's qtdemux_parse_uuid function may read past the end of a heap-allocated buffer, allowing an attacker to disclose heap memory contents.
When was the CVE record for CVE-2026-46471 published?
The CVE record for CVE-2026-46471 was published on October 16, 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 October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-46471 actively exploited?
CVE-2026-46471 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-46471?
CVE-2026-46471 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-46471?
A fix for CVE-2026-46471 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-46471 are linked in the Vendor Advisories panel on this page.

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