How severe is CVE-2023-48403?

CVE-2023-48403 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-48403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-48403?

CVE-2023-48403 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-48403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-48403 published?

CVE-2023-48403 was published on 2023-12-08 and last updated on 2026-06-17.

CVE-2023-48403

CVE-2023-48403 is a high-severity vulnerability in Google Android with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Google Android
Published: 2023-12-08
Last modified: 2026-06-17

Description

In sms_DecodeCodedTpMsg of sms_PduCodec.c, there is a possible out of bounds read due to a heap buffer overflow. This could lead to remote information disclosure if the attacker is able to observe the behavior of the subsequent switch conditional with no additional execution privileges needed. User interaction is not needed for exploitation.

Frequently asked questions

What is CVE-2023-48403?: In sms_DecodeCodedTpMsg of sms_PduCodec.c, there is a possible out of bounds read due to a heap buffer overflow. This could lead to remote information disclosure if the attacker is able to observe the behavior of the subsequent switch conditional with no additional execution privileges needed. User interaction is not needed for exploitation.
How severe is CVE-2023-48403?: CVE-2023-48403 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-48403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-48403?: CVE-2023-48403 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-48403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-48403 published?: CVE-2023-48403 was published on 2023-12-08 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/pixel/2023-12-01

Affected products (1)

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

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