CVE-2021-3006Known exploitationPublic exploitNetwork attack vector

Price manipulation via unrestricted token issuance

Published Jan 3, 2021 · Updated Aug 3, 2024

Missing access control in Seal Finance Farm allows remote attackers to manipulate pool prices by calling the breed function. The externally callable breed function accepts any caller, mints SEAL into the pool, swaps half of the issuance, and adds liquidity at pool-derived rates. No authentication or user interaction is required; crafted swaps around the call distort the exchange rate and extract SEAL from affected liquidity pools.

CVSS severity7.5
High
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing access control in Seal Finance Farm allows remote attackers to manipulate pool prices by calling the breed function. The externally callable breed function accepts any caller, mints SEAL into the pool, swaps half of the issuance, and adds liquidity at pool-derived rates. No authentication or user interaction is required; crafted swaps around the call distort the exchange rate and extract SEAL from affected liquidity pools.

The record

CVE
CVE-2021-3006
Published
Jan 3, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 30, 2020Exploitation reportedSeal Finance breed() exploitation campaign
  2. Jan 3, 2021CVE publishedPublication date reported by the CVE source.
  3. 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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