CVE-2022-39830

Signing interruption via unchecked EC coordinate failure

Published Sep 5, 2022 · Updated Aug 3, 2024

Denial of service in Samsung mTower 0.3.0 and earlier allows attackers to interrupt firmware-information signing via a crafted ECDSA key file. The sign_pFwInfo function in tools/fwinfogen.c ignores a failed EC_KEY_set_public_key_affine_coordinates call and continues to sign with the invalid key. Reachability requires control of the command-line key file, and the published evidence establishes disruption of firmware generation rather than a device-wide crash.

CVSS severity7.5
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Denial of service in Samsung mTower 0.3.0 and earlier allows attackers to interrupt firmware-information signing via a crafted ECDSA key file. The sign_pFwInfo function in tools/fwinfogen.c ignores a failed EC_KEY_set_public_key_affine_coordinates call and continues to sign with the invalid key. Reachability requires control of the command-line key file, and the published evidence establishes disruption of firmware generation rather than a device-wide crash.

The record

CVE
CVE-2022-39830
Published
Sep 5, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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