CVE-2026-48173: In the NAS message handler, improper validation of the length field in NAS message causes memory corruption

Q: How do I fix CVE-2026-48173?

exynos 850: mitigate or apply the listed mitigation; exynos 2100: mitigate or apply the listed mitigation; exynos 1280: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2026-48173 being exploited?

CVE-2026-48173 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-48173 affect?

CVE-2026-48173 affects exynos 850, exynos 2100, exynos 1280. Severity is high (CVSS n/a). In the NAS message handler, improper validation of the length field in NAS message causes memory corruption

Q: How urgent is CVE-2026-48173?

Priority 0/100. No elevated risk signals yet.

Routine

HIGH n/aMITIGATEMITIGATEMITIGATE

CVE-2026-48173 is a high-severity flaw (CVSS n/a) affecting exynos 850, exynos 2100, exynos 1280. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the NAS message handler, improper validation of the length field in NAS message causes memory corruption

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	n/a (High)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-120
Published	2026-11-05
Last modified	2026-11-05

Publisher (CNA): samsungsemiconductor · Vendor: samsung semiconductor · Source: CVE Program record (NVD analysis pending)

Last updated 2026-11-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-11-05 02:43 UTCPublished CVE record published
2026-11-05 02:43 UTCUpdated Record last modified

samsung semiconductor exynos 850 MITIGATE

Affected: < September 2026

Fixed in: September 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-850 || rpm -q exynos-850 || exynos-850 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

samsung semiconductor exynos 2100 MITIGATE

Affected: < September 2026

Fixed in: September 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-2100 || rpm -q exynos-2100 || exynos-2100 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

samsung semiconductor exynos 1280 MITIGATE

Affected: < September 2026

Fixed in: September 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-1280 || rpm -q exynos-1280 || exynos-1280 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

samsung semiconductor exynos 2200 MITIGATE

Affected: < September 2026

Fixed in: September 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-2200 || rpm -q exynos-2200 || exynos-2200 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

samsung semiconductor exynos 1330 MITIGATE

Affected: < September 2026

Fixed in: September 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-1330 || rpm -q exynos-1330 || exynos-1330 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

samsung semiconductor exynos 1380 MITIGATE

Affected: < September 2026

Fixed in: September 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-1380 || rpm -q exynos-1380 || exynos-1380 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-48173 | Samsung Semiconductor Exynos W930 NAS Message length memory corruption 2026-11-05

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-48173?

exynos 850: mitigate or apply the listed mitigation; exynos 2100: mitigate or apply the listed mitigation; exynos 1280: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-48173 being exploited?

CVE-2026-48173 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-48173 affect?

CVE-2026-48173 affects exynos 850, exynos 2100, exynos 1280. Severity is high (CVSS n/a). In the NAS message handler, improper validation of the length field in NAS message causes memory corruption

How urgent is CVE-2026-48173?

Priority 0/100. No elevated risk signals yet.

Software pages

Samsung vulnerabilities

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References

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