CVE-2026-125704

HIGHPre-NVD 7.57.5
EchelonGraph scoreHIGH confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-11-10. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — Patch released this week

Also known asEUVD-2026-120866 (ENISA EUVD) · GHSA-hc85-6x4f-g38q (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A use-after-free flaw was found in GStreamer core buffer value deserialization. When serialized buffer text contains an invalid character, an error path frees a mapped buffer before unmapping it. Applications that parse untrusted caps or structure data can reach a freed-buffer read and may crash. A network-facing GStreamer Data Protocol receiver can process such caps data without user interaction; further impact has not been established.

CVSS v3
7.5
EG Score
7.5HIGHhigh confidence
EG Risk
49
EG Risk 49/100

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.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
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.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

November 10, 2026

Last Modified

November 12, 2026

Advisory Details (4)

Auto-updated Nov 10, 2026
Patch available. Sources: redhat.
Web page

Security Advisory 2026-0028 | GStreamer

https://gstreamer.freedesktop.org/security/sa-2026-0028.html
Red Hat

2569128 – (CVE-2026-125704) CVE-2026-125704 gstreamer: gstreamer: Use-after-free in GStreamer core buffer value deserialization

https://bugzilla.redhat.com/show_bug.cgi?id=2569128
Red HatMentions a patch (unverified)

CVE-2026-125704 - 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-2026-125704

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatgstreamer1-0:1.22.12-3.el9_9.12026-11-12redhat
redhatgstreamer1-0:1.16.1-3.el8_102026-11-11redhat
redhatgstreamer1-0:1.26.7-5.el10_3.12026-11-11redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 22× 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. 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-11-12 19:29 UTCEchelonGraph re-scored
  3. 2026-11-12 19:29 UTCVendor advisory
  4. 2026-11-12 19:29 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  5. 2026-11-12 18:48 UTCEchelonGraph re-scored
  6. 2026-11-12 18:48 UTCVendor advisory
  7. 2026-11-12 18:48 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  9. 2026-11-12 06:28 UTCEchelonGraph re-scored
  10. 2026-11-12 06:28 UTCVendor advisory
  11. 2026-11-12 06:28 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  12. 2026-11-12 05:38 UTCEchelonGraph re-scored
  13. 2026-11-12 05:38 UTCVendor advisory
  14. 2026-11-12 05:38 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  15. 2026-11-12 04:28 UTCEchelonGraph re-scored
  16. 2026-11-12 04:28 UTCVendor advisory
  17. 2026-11-12 04:28 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-11-12 03:23 UTCEchelonGraph re-scored
  19. 2026-11-12 03:23 UTCVendor advisory
  20. 2026-11-12 03:23 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-11-11 19:27 UTCEchelonGraph re-scored
  22. 2026-11-11 19:27 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  23. 2026-11-11 19:11 UTCEchelonGraph re-scored
  24. 2026-11-11 19:11 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  25. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
Show 10 more
  1. 2026-11-10 14:27 UTCEchelonGraph re-scored
  2. 2026-11-10 14:27 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  3. 2026-11-10 14:15 UTCEchelonGraph re-scored
  4. 2026-11-10 14:15 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  5. 2026-11-10 12:48 UTCEchelonGraph re-scored
  6. 2026-11-10 12:48 UTCGHSA enrichmentGHSA-hc85-6x4f-g38q · GitHub severity HIGH · GitHub CVSS 7.5
  7. 2026-11-10 12:00 UTCENISA EUVD ID recordedEUVD-2026-120866 · Source: ENISA EUVD
  8. 2026-11-10 11:28 UTCEchelonGraph re-scored
  9. 2026-11-10 10:45 UTCEchelonGraph re-scoredFirst assessed: 7.5 HIGH
  10. 2026-11-10 10:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-125704?
CVE-2026-125704 is a high-severity vulnerability; its CVE record was published on November 10, 2026. A use-after-free flaw was found in GStreamer core buffer value deserialization. When serialized buffer text contains an invalid character, an error path frees a mapped buffer before unmapping it. Applications that parse untrusted caps or structure data can reach a freed-buffer read and may crash. A…
When was CVE-2026-125704 made public?
CVE-2026-125704 was made public on May 11, 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 November 10, 2026. EchelonGraph's copy of the record carries a last-modified date of November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-125704 actively exploited?
CVE-2026-125704 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-125704?
CVE-2026-125704 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-125704?
A fix for CVE-2026-125704 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-125704 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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