CVE-2020-8860

Baseband code execution via Call Control overflow

Published Feb 22, 2020 · Updated Aug 4, 2024

Stack-based buffer overflow in Samsung Galaxy S10 Exynos firmware allows remote attackers to execute code via an answered phone call. Call Control Setup processing copies attacker-controlled data into a fixed-length stack buffer without first validating its length. Exploitation requires the target to answer the call and grants code execution in the baseband processor.

CVSS severity8.0
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Samsung Galaxy S10 Exynos firmware allows remote attackers to execute code via an answered phone call. Call Control Setup processing copies attacker-controlled data into a fixed-length stack buffer without first validating its length. Exploitation requires the target to answer the call and grants code execution in the baseband processor.

The record

CVE
CVE-2020-8860
Published
Feb 22, 2020
Updated
Aug 4, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Galaxy S10
Classifications
CWE-787, CWE-121, T1658
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Firmware G973FXXS3ASJA, O(8.x), P(9.0), Q(10.0) devices with Exynos chipsets

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Galaxy S10version=Firmware G973FXXS3ASJA, O(8.x), P(9.0), Q(10.0) devices with Exynos chipsets

Published CVSS scores

5.4NIST National Vulnerability DatabaseAV:A/AC:M/Au:N/C:P/I:P/A:P
8.0NIST National Vulnerability DatabaseCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.1Zero Day InitiativeCVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1658Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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