CVE-2026-88357

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-24. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

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

nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_t or wider integer pointers and directly dereferenced without alignment checks. This results in undefined behavior and can cause process termination in UBSan-instrumented builds or on strict-alignment architectures, leading to denial of service.

CVSS v3
7.5
EG Score
7.5HIGHhigh confidence
EG Risk
65
EG Risk 65/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 24, 2026

Last Modified

September 24, 2026

Advisory Details (6)

Auto-updated Sep 24, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
github_pr

fix: avoid unaligned reads in DNS and serializers

Fix merged in ntop/nDPI PR #3231 on 2026-08-31 — awaiting tagged release

https://github.com/ntop/nDPI/pull/3231
github_commit

commit 6698f14bf602 (utoni/nDPI)

Fix landed in utoni/nDPI commit 6698f14bf602 — awaiting tagged release

https://github.com/utoni/nDPI/commit/6698f14bf6025394a537fe23f413cf79e9d13594
github_commit

commit 694231bb43ff (utoni/nDPI)

Fix landed in utoni/nDPI commit 694231bb43ff — awaiting tagged release

https://github.com/utoni/nDPI/commit/694231bb43ff21f452fbc2b53fcf6cdc9a99f75f
github_commit

commit 8fc3b4399200 (utoni/nDPI)

Fix landed in utoni/nDPI commit 8fc3b4399200 — awaiting tagged release

https://github.com/utoni/nDPI/commit/8fc3b439920021a77165f8aee4f81b25bc88629e
github_commit

commit 6ce1280c52ed (utoni/nDPI)

Fix landed in utoni/nDPI commit 6ce1280c52ed — awaiting tagged release

https://github.com/utoni/nDPI/commit/6ce1280c52ed52a97332c3fe58fd2b47b867ec6e
generic

UBSan "Type mismatch in operation" trap (SIGILL) on unaligned pointer-cast reads (DNS get16, ndpi_serializer) · Issue #3213 · ntop/nDPI · GitHub

https://github.com/ntop/nDPI/issues/3213

Vendor Advisories for CVE-2026-88357(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
ndpi4.2-2, 4.2-2.1, 4.2-2.1~exp1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
ndpi4.2-2.1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ndpi4.2-2.1
  • 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 26× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-10-05 09:01 UTCEG score recompute
  2. 2026-10-05 09:01 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 20:29 UTCGHSA enrichment
  5. 2026-10-04 07:56 UTCGHSA enrichment
  6. 2026-10-03 19:22 UTCEG score recompute
  7. 2026-10-03 19:22 UTCGHSA enrichment
  8. 2026-10-03 06:50 UTCGHSA enrichment
  9. 2026-10-02 18:16 UTCGHSA enrichment
  10. 2026-10-02 18:16 UTCEG score recompute
  11. 2026-10-02 18:16 UTCGHSA enrichment
  12. 2026-10-02 05:38 UTCEG score recompute
  13. 2026-10-02 05:37 UTCGHSA enrichment
  14. 2026-10-01 19:51 UTCEPSS rescore
  15. 2026-10-01 17:02 UTCGHSA enrichment
  16. 2026-10-01 03:58 UTCGHSA enrichment
  17. 2026-09-30 15:26 UTCEG score recompute
  18. 2026-09-30 15:26 UTCGHSA enrichment
  19. 2026-09-30 15:04 UTCEPSS rescore
  20. 2026-09-30 02:53 UTCEG score recompute
  21. 2026-09-30 02:53 UTCGHSA enrichment
  22. 2026-09-29 14:20 UTCGHSA enrichment
  23. 2026-09-29 01:47 UTCEG score recompute
  24. 2026-09-29 01:47 UTCGHSA enrichment
  25. 2026-09-28 13:52 UTCEPSS rescore
Show 20 more
  1. 2026-09-28 13:15 UTCGHSA enrichment
  2. 2026-09-28 00:42 UTCEG score recompute
  3. 2026-09-28 00:42 UTCGHSA enrichment
  4. 2026-09-27 13:48 UTCEPSS rescore
  5. 2026-09-27 12:09 UTCGHSA enrichment
  6. 2026-09-26 23:34 UTCEG score recompute
  7. 2026-09-26 23:34 UTCGHSA enrichment
  8. 2026-09-26 15:59 UTCEPSS rescore
  9. 2026-09-26 11:02 UTCEG score recompute
  10. 2026-09-26 11:02 UTCGHSA enrichment
  11. 2026-09-25 22:26 UTCGHSA enrichment
  12. 2026-09-25 09:49 UTCGHSA enrichment
  13. 2026-09-24 21:16 UTCGHSA enrichment
  14. 2026-09-24 18:36 UTCEG score recompute
  15. 2026-09-24 18:36 UTCGHSA enrichment
  16. 2026-09-24 17:57 UTCEG score recompute▲ 7.50
  17. 2026-09-24 17:56 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  18. 2026-09-24 16:30 UTCNVD update
  19. 2026-09-24 15:47 UTCEG score recompute
  20. 2026-09-24 15:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88357?
CVE-2026-88357 is a high vulnerability published on September 24, 2026. nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_t or wider integer pointers and directly dereferenced without alignment checks. This results in…
When was CVE-2026-88357 disclosed?
CVE-2026-88357 was first published on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88357 actively exploited?
CVE-2026-88357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-88357?
CVE-2026-88357 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-88357?
An upstream fix for CVE-2026-88357 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-2026-88357 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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