CVE-2026-48186: Improper handling of messages before AS security activation can cause unexpected behavior

Q: How do I fix CVE-2026-48186?

exynos 1280: mitigate or apply the listed mitigation; exynos 2200: mitigate or apply the listed mitigation; exynos 1330: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2026-48186 being exploited?

CVE-2026-48186 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-2026-48186 affect?

CVE-2026-48186 affects exynos 1280, exynos 2200, exynos 1330. Severity is high (CVSS n/a). Improper handling of messages before AS security activation can cause unexpected behavior

Q: How urgent is CVE-2026-48186?

Priority 0/100. No elevated risk signals yet.

Routine

HIGH n/aMITIGATEMITIGATEMITIGATE

CVE-2026-48186 is a high-severity flaw (CVSS n/a) affecting exynos 1280, exynos 2200, exynos 1330. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper handling of messages before AS security activation can cause unexpected behavior

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-754
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 02:42 UTCPublished CVE record published
2026-11-05 02:42 UTCUpdated Record last modified

samsung semiconductor exynos 1280 MITIGATE

Affected: < October 2026

Fixed in: October 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: < October 2026

Fixed in: October 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: < October 2026

Fixed in: October 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: < October 2026

Fixed in: October 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.

samsung semiconductor exynos 1480 MITIGATE

Affected: < October 2026

Fixed in: October 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-1480 || rpm -q exynos-1480 || exynos-1480 --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 2400 MITIGATE

Affected: < October 2026

Fixed in: October 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-2400 || rpm -q exynos-2400 || exynos-2400 --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-2026-48186 | Samsung Semiconductor Exynos W1000 input validation 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-2026-48186?

exynos 1280: mitigate or apply the listed mitigation; exynos 2200: mitigate or apply the listed mitigation; exynos 1330: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-48186 being exploited?

CVE-2026-48186 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-2026-48186 affect?

CVE-2026-48186 affects exynos 1280, exynos 2200, exynos 1330. Severity is high (CVSS n/a). Improper handling of messages before AS security activation can cause unexpected behavior

How urgent is CVE-2026-48186?

Priority 0/100. No elevated risk signals yet.

Software pages

Samsung vulnerabilities

Related CVEs

CVE-2026-48173 HIGH n/a MITIGATE MITIGATE In the NAS message handler, improper validation of the length field in NAS message causes memory corruption
CVE-2026-48174 HIGH n/a MITIGATE MITIGATE In the NR RRC component, improper handling of messages before authentication triggers a data abort, which lead
CVE-2026-35494 HIGH n/a MITIGATE MITIGATE In the baseband, memory corruption during NAS packet processing can cause a denial of service.
CVE-2026-48175 HIGH n/a MITIGATE MITIGATE Processing a malformed RRC message leads to an out-of-bounds read, resulting in a denial-of-service condition.
CVE-2026-68984 HIGH n/a MITIGATE MITIGATE In the Samsung Exynos NPU kernel driver, an integer overflow allows an unprivileged application to trigger mem

References

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