CVE-2026-102808

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-29. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-89108 (ENISA EUVD) · GHSA-6mwg-qhjp-3hf8 (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictMonitorThe 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, then apply it (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

PX4 Autopilot through 1.17.0 contains a NULL pointer dereference vulnerability in the sd_stress command where the -b byte count parameter is parsed without validation before being passed to malloc() and memset(). Attackers with shell access, including through MAVLink, can supply invalid byte count values to crash the flight controller.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 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: 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, then apply it.
EPSS PROB
0.2%
EPSS %ILE
15th
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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-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 2026-10-29). 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.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 every mission impact level.

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, then apply it.

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.

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 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 29, 2026

Last Modified

October 2, 2026

Advisory Details (5)

Auto-updated Sep 29, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
Web page

PX4 Autopilot through 1.17.0 NULL Pointer Dereference via sd_stress | Advisories | VulnCheck

https://www.vulncheck.com/advisories/px4-autopilot-through-1.17.0-null-pointer-dereference-via-sd-stress
Web page

GitHub - PX4/PX4-Autopilot: PX4 Autopilot Software · GitHub

https://github.com/PX4/PX4-Autopilot
Web page

PX4-Autopilot/src/systemcmds/sd_stress/sd_stress.cpp at d6f12ad1c4f70ad3230afd7d86e971421e02fef4 · PX4/PX4-Autopilot · GitHub

https://github.com/PX4/PX4-Autopilot/blob/d6f12ad1c4f70ad3230afd7d86e971421e02fef4/src/systemcmds/sd_stress/sd_stress.cpp#L186-L204
GitHub commit

commit c865dc9fde14 (PX4/PX4-Autopilot)

Fix landed in PX4/PX4-Autopilot commit c865dc9fde14 — awaiting tagged release

https://github.com/PX4/PX4-Autopilot/commit/c865dc9fde14d1391916775153aa271603c3c592
GitHub pull request

fix(sd_stress): add size check when parse -b option to prevent system crash

Fix merged in PX4/PX4-Autopilot PR #28795 on 2026-09-28 — awaiting tagged release

https://github.com/PX4/PX4-Autopilot/pull/28795

Vendor Advisories for CVE-2026-102808(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× 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. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  3. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  4. 2026-10-29 18:33 UTCEG score recompute
  5. 2026-10-29 18:33 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  6. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  7. 2026-10-29 14:49 UTCEG score recompute
  8. 2026-10-29 14:49 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  9. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  10. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  11. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  12. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  13. 2026-10-25 14:56 UTCEG score recompute
  14. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-23 09:28 UTCEG score recompute
  17. 2026-10-23 09:28 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  18. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-10-18 05:10 UTCEG score recompute
  23. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 47 more
  1. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-12 16:40 UTCEG score recompute
  4. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-10-11 20:16 UTCEG score recompute
  6. 2026-10-11 18:28 UTCEG score recompute
  7. 2026-10-11 15:19 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  8. 2026-10-11 15:01 UTCEG score recompute
  9. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-10 17:31 UTCEG score recompute
  12. 2026-10-10 17:31 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  13. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-09 19:39 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  15. 2026-10-08 21:51 UTCEG score recompute
  16. 2026-10-08 21:51 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  17. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  18. 2026-10-08 00:04 UTCEG score recompute
  19. 2026-10-08 00:03 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  20. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-10-07 02:16 UTCEG score recompute
  22. 2026-10-07 02:16 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  23. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-10-06 04:28 UTCEG score recompute
  25. 2026-10-06 04:28 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  26. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  27. 2026-10-05 06:41 UTCEG score recompute
  28. 2026-10-05 06:41 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  29. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  30. 2026-10-04 08:54 UTCEG score recompute
  31. 2026-10-04 08:54 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  32. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  33. 2026-10-03 11:06 UTCEG score recompute
  34. 2026-10-03 11:06 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  35. 2026-10-02 13:18 UTCEG score recompute
  36. 2026-10-02 13:18 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  37. 2026-10-02 12:22 UTCEG score recompute
  38. 2026-10-02 12:22 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  39. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  40. 2026-10-01 15:13 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  41. 2026-09-30 17:26 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  42. 2026-09-30 16:34 UTCEG score recompute
  43. 2026-09-30 16:34 UTCGHSA enrichmentGHSA-6mwg-qhjp-3hf8 · GitHub severity HIGH · GitHub CVSS 6.5
  44. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  45. 2026-09-29 18:31 UTCEG score recompute
  46. 2026-09-29 17:29 UTCEG score recomputeFirst assessed: 6.5 MEDIUM
  47. 2026-09-29 17:28 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-102808?
CVE-2026-102808 is a medium-severity vulnerability; its CVE record was published on September 29, 2026. PX4 Autopilot through 1.17.0 contains a NULL pointer dereference vulnerability in the sd_stress command where the -b byte count parameter is parsed without validation before being passed to malloc() and memset(). Attackers with shell access, including through MAVLink, can supply invalid byte count…
When was CVE-2026-102808 made public?
CVE-2026-102808 was made public on September 28, 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 29, 2026. EchelonGraph's copy of the record carries a last-modified date of October 2, 2026; the record at its source may have been updated since.
Is CVE-2026-102808 actively exploited?
CVE-2026-102808 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102808?
CVE-2026-102808 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102808?
An upstream fix for CVE-2026-102808 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-2026-102808 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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