CVE-2026-122328

HIGHPre-NVD 7.87.8
EchelonGraph scoreHIGH confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-11-05. A secondary CVSS source baseline 7.8; sources differ by 0.0.

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

Also known asEUVD-2026-117536 (ENISA EUVD) · GHSA-7qqc-5rvj-wqqw (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan mitigationThe upstream fix is not in a release yet: until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it (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: 7.8Exploit: No code on recordExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

SDL_mixer 3.1.2 through 3.2.4 contains a stack-based buffer overflow vulnerability in FetchXLaw() of src/decoder_wav.c when decoding A-law or mu-law WAV files. Attackers can supply a crafted WAV file whose doubly-offset float expansion overwrites about 1 KB of adjacent stack memory, causing crashes or potentially code execution.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
51
EG Risk 51/100

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)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 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, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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: An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.
EPSS PROB
0.2%
EPSS %ILE
5th
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 (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.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, Track* at medium and Attend at high mission impact.

An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high, then apply it.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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 5, 2026

Last Modified

November 12, 2026

Advisory Details (8)

Auto-updated Nov 5, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
Web page

SDL_mixer 3.1.2 through 3.2.4 Stack-based Buffer Overflow via FetchXLaw() in WAV Decoder | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sdl-mixer-3.1.2-through-3.2.4-stack-based-buffer-overflow-via-fetchxlaw-in-wav-decoder
Web page

GitHub - libsdl-org/SDL_mixer: An audio mixer that supports various file formats for Simple Directmedia Layer. · GitHub

https://github.com/libsdl-org/SDL_mixer
Web page

SDL_mixer FetchXLaw Stack Buffer Overflow in WAV and AIFF Decoders - HackMD

https://hackmd.io/@haindpwn/sdl-mixer-fetchxlaw-stack-overflow
Web page

SDL_mixer/src/decoder_wav.c at release-3.2.4 · libsdl-org/SDL_mixer · GitHub

https://github.com/libsdl-org/SDL_mixer/blob/release-3.2.4/src/decoder_wav.c#L1658-1659
Web page

SDL_mixer/src/decoder_wav.c at release-3.2.4 · libsdl-org/SDL_mixer · GitHub

https://github.com/libsdl-org/SDL_mixer/blob/release-3.2.4/src/decoder_wav.c#L750-761
GitHub commit

commit df966f698e18 (libsdl-org/SDL_mixer)

Fix landed in libsdl-org/SDL_mixer commit df966f698e18 — awaiting tagged release

https://github.com/libsdl-org/SDL_mixer/commit/df966f698e18ae849bd92796a26311e79c555718
GitHub pull request

decoder_wav.c: fix stack overflow in FetchXLaw()

Fix merged in libsdl-org/SDL_mixer PR #910 on 2026-10-31 — awaiting tagged release

https://github.com/libsdl-org/SDL_mixer/pull/910
Web page

SDL_mixer FetchXLaw Stack Buffer Overflow in WAV and AIFF Decoders · Issue #907 · libsdl-org/SDL_mixer · GitHub

https://github.com/libsdl-org/SDL_mixer/issues/907

Vendor Advisories for CVE-2026-122328(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libsdl3-mixer3.1.2+ds-1 ... 3~git20250610~30c1301+ds-1 (44 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 13× in last 7d / 16× 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 0.2% · 5th percentile
  2. 2026-11-12 21:08 UTCEchelonGraph re-scored
  3. 2026-11-12 21:08 UTCGHSA enrichmentGHSA-7qqc-5rvj-wqqw · GitHub severity HIGH · GitHub CVSS 7.8
  4. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-11-11 16:38 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-11-11 03:48 UTCEchelonGraph re-scored
  7. 2026-11-11 03:48 UTCGHSA enrichmentGHSA-7qqc-5rvj-wqqw · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-11-10 16:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-11-09 17:42 UTCEchelonGraph re-scored
  10. 2026-11-09 17:42 UTCGHSA enrichmentGHSA-7qqc-5rvj-wqqw · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-11-09 17:27 UTCEchelonGraph re-scored
  12. 2026-11-09 17:27 UTCGHSA enrichmentGHSA-7qqc-5rvj-wqqw · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-11-09 17:15 UTCEchelonGraph re-scored
  14. 2026-11-09 17:15 UTCGHSA enrichmentGHSA-7qqc-5rvj-wqqw · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-11-09 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-11-08 16:38 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-11-08 08:51 UTCEchelonGraph re-scored
  18. 2026-11-08 08:51 UTCGHSA enrichmentGHSA-7qqc-5rvj-wqqw · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-11-06 16:36 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-11-05 16:27 UTCEchelonGraph re-scored
  22. 2026-11-05 16:04 UTCENISA EUVD ID recordedEUVD-2026-117536 · Source: ENISA EUVD
  23. 2026-11-05 15:19 UTCEchelonGraph re-scoredFirst assessed: 7.8 HIGH
  24. 2026-11-05 15:18 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-122328?
CVE-2026-122328 is a high-severity vulnerability; its CVE record was published on November 5, 2026. SDL_mixer 3.1.2 through 3.2.4 contains a stack-based buffer overflow vulnerability in FetchXLaw() of src/decoder_wav.c when decoding A-law or mu-law WAV files. Attackers can supply a crafted WAV file whose doubly-offset float expansion overwrites about 1 KB of adjacent stack memory, causing crashes…
When was CVE-2026-122328 made public?
CVE-2026-122328 was made public on October 22, 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 November 5, 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-2026-122328 actively exploited?
CVE-2026-122328 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-2026-122328?
CVE-2026-122328 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-122328?
An upstream fix for CVE-2026-122328 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-122328 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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