CVE-2022-27810Network attack vector

Dev-mode crash via recursive error handling

Published Oct 6, 2022 · Updated Aug 3, 2024

Uncontrolled recursion in Meta Platforms Hermes before 0.12.0 allows attackers to crash dev-mode processes with malformed JavaScript. The error handler recursively processes an error raised while executing the crafted script without reaching a terminating condition. Only development builds with assertions enabled are affected, and untrusted JavaScript must reach the engine; the resulting impact is process termination.

CVSS severity7.5
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in Meta Platforms Hermes before 0.12.0 allows attackers to crash dev-mode processes with malformed JavaScript. The error handler recursively processes an error raised while executing the crafted script without reaching a terminating condition. Only development builds with assertions enabled are affected, and untrusted JavaScript must reach the engine; the resulting impact is process termination.

The record

CVE
CVE-2022-27810
Published
Oct 6, 2022
Updated
Aug 3, 2024
Vendor
Meta Platforms, Inc.
Product
Hermes
Classifications
CWE-674, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 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?

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

  1. Affected versionversion=unspecified <0.12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meta Platforms, Inc. · Hermesversion=unspecified <0.12.0

Published CVSS scores

7.5NVDCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
T1499.004Application or System Exploitation

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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