CVE-2023-33241: Crypto wallets implementing the GG18 or GG20 TSS protocol might allow an attacker to extract a full ECDSA priv

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CRITICAL 9.6MITIGATEMITIGATE

CVE-2023-33241 is a critical-severity flaw (CVSS 9.6) affecting gg18, gg20. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Crypto wallets implementing the GG18 or GG20 TSS protocol might allow an attacker to extract a full ECDSA private key by injecting a malicious pallier key and cheating in the range proof. Depending on the Beta parameters chosen in the protocol implementation, the attack might require 16 signatures or more fully exfiltrate the other parties' private key shares.

Why this priority

Critical severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-74
Published	2023-08-09
Last modified	2026-06-17

Publisher (CNA): Halborn · Vendor: gg18 project · gg20 project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-09 22:15 UTCPublished CVE record published
2026-06-17 06:01 UTCUpdated Record last modified

gg18 project gg18 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gg18 || rpm -q gg18 || gg18 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

gg20 project gg20 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gg20 || rpm -q gg20 || gg20 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-33241?

gg18: mitigate or apply the listed mitigation; gg20: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-33241 being exploited?

CVE-2023-33241 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-33241 affect?

CVE-2023-33241 affects gg18, gg20. Severity is critical (CVSS 9.6). Crypto wallets implementing the GG18 or GG20 TSS protocol might allow an attacker to extract a full ECDSA private key by injecting a malicious pallier key and cheating in the range proof. Depending on the Beta parameters chosen in the proto

How urgent is CVE-2023-33241?

Priority 56/100. Critical severity; Public exploit reference

References

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