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Industrial CVE-2026-22700

HIGH
Improper Input Validation (CWE-20)
2026-01-10 security-advisories@github.com GHSA-j9xq-69pf-pcm8
Industrial Denial Of Service Sm2 Elliptic Curve
7.5
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 22, 2026 - 14:53 vuln.today
Public exploit code
Patch released
Jan 22, 2026 - 14:53 nvd
Patch available
CVE Published
Jan 10, 2026 - 06:15 nvd
HIGH 7.5

DescriptionGitHub Advisory

RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991.

AnalysisAI

RustCrypto's SM2 elliptic curve implementation in versions 0.14.0-pre.0 and 0.14.0-rc.0 is vulnerable to denial-of-service through improper input validation in the decrypt() function, allowing remote attackers to crash affected applications by submitting malformed or undersized ciphertext that triggers unhandled panics. Public exploit code exists for this vulnerability, though a patch is available.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Send undersized SM2 ciphertext
Exploit
Trigger unchecked slice::split_at operation
Execution
Panic in decrypt() function
Impact
Denial of service
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Vulnerability AssessmentAI

Exploitation RustCrypto Elliptic Curves library versions 0.14.0-pre.0 or 0.14.0-rc.0 with SM2 public-key encryption (PKE) implementation enabled. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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CVE-2026-22700 vulnerability details – vuln.today
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