CVE-2026-22699Public exploitNetwork attack vector

Unauthenticated service crash via unchecked point decoding

Published Jan 10, 2026 · Updated Jan 10, 2026

Improper input validation in RustCrypto elliptic-curves 0.14.0-pre.0 and 0.14.0-rc.0 allows remote attackers to crash SM2 decryptors. EncodedPoint::from_bytes accepts correctly sized SEC1 coordinates without verifying curve membership, and decrypt() unwraps the failed AffinePoint conversion. Exposure requires a consuming service to pass attacker-controlled SM2 ciphertext to the library; the panic can terminate its decrypting thread or process.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in RustCrypto elliptic-curves 0.14.0-pre.0 and 0.14.0-rc.0 allows remote attackers to crash SM2 decryptors. EncodedPoint::from_bytes accepts correctly sized SEC1 coordinates without verifying curve membership, and decrypt() unwraps the failed AffinePoint conversion. Exposure requires a consuming service to pass attacker-controlled SM2 ciphertext to the library; the panic can terminate its decrypting thread or process.

The record

CVE
CVE-2026-22699
Published
Jan 10, 2026
Updated
Jan 10, 2026
Vendor
RustCrypto
Product
elliptic-curves
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion== 0.14.0-pre.0
  2. Affected versionversion== 0.14.0-rc.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RustCrypto · elliptic-curvesversion== 0.14.0-pre.0; version== 0.14.0-rc.0

Published CVSS scores

7.5GitHubCVSS: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.

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No observations available

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

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

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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