CVE-2026-33958: Processing a malformed RRC Reconfiguration message leads to an out-of-bounds (OOB) access, resulting in a deni

Q: How do I fix CVE-2026-33958?

exynos 1080: 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-2026-33958 being exploited?

CVE-2026-33958 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-2026-33958 affect?

CVE-2026-33958 affects exynos 1080, exynos 2100, exynos 1280. Severity is high (CVSS n/a). Processing a malformed RRC Reconfiguration message leads to an out-of-bounds (OOB) access, resulting in a denial-of-service (DoS) condition.

Q: How urgent is CVE-2026-33958?

Priority 0/100. No elevated risk signals yet.

Routine

HIGH n/aMITIGATEMITIGATEMITIGATE

CVE-2026-33958 is a high-severity flaw (CVSS n/a) affecting exynos 1080, exynos 2100, exynos 1280. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Processing a malformed RRC Reconfiguration message leads to an out-of-bounds (OOB) access, resulting in a denial-of-service (DoS) condition.

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-1286
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 02:37 UTCPublished CVE record published
2026-11-05 02:37 UTCUpdated Record last modified

samsung semiconductor exynos 1080 MITIGATE

Affected: < October 2026

Fixed in: October 2026

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy exynos-1080 || rpm -q exynos-1080 || exynos-1080 --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: < October 2026

Fixed in: October 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: < 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.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-33958 | Samsung Semiconductor Exynos Modem 5410 out-of-bounds 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-2026-33958?

exynos 1080: 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-2026-33958 being exploited?

CVE-2026-33958 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-2026-33958 affect?

CVE-2026-33958 affects exynos 1080, exynos 2100, exynos 1280. Severity is high (CVSS n/a). Processing a malformed RRC Reconfiguration message leads to an out-of-bounds (OOB) access, resulting in a denial-of-service (DoS) condition.

How urgent is CVE-2026-33958?

Priority 0/100. No elevated risk signals yet.

Software pages

Samsung vulnerabilities

Related CVEs

CVE-2026-33965 HIGH n/a MITIGATE MITIGATE An attacker may send a malicious IMS message to the target device, potentially leading to information exposure
CVE-2025-66368 HIGH n/a MITIGATE MITIGATE Incorrect handling of SDP payload leads to a Denial of Service
CVE-2026-33972 HIGH n/a MITIGATE MITIGATE In the Exynos modem's IMS stack, Out of Bound access occurs due to improper validation.
CVE-2026-48179 HIGH n/a MITIGATE MITIGATE In the Exynos modem's IMS stack, improper handling of SDP payload leads to a Denial of Service
CVE-2026-48176 HIGH n/a MITIGATE MITIGATE A memory corruption vulnerability caused by improper validation of messages

References

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