CVE-2025-8556

ADVISORY - github

Summary

Impact

The CIRCL implementation of FourQ fails to validate user-supplied low-order points during Diffie-Hellman key exchange, potentially allowing attackers to force the identity point and compromise session security.

Moreover, there is an incorrect point validation in ScalarMult can lead to incorrect results in the isEqual function and if a point is on the curve.

Patches

Version 1.6.1 (https://github.com/cloudflare/circl/tree/v1.6.1) mitigates the identified issues.

We acknowledge Alon Livne (Botanica Software Labs) for the reported findings.

EPSS Score⁠: 0.00015 (0.024)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-347⁠

Improper Verification of Cryptographic Signature

ADVISORY - github

CWE-20⁠

Improper Input Validation

CWE-347⁠

Improper Verification of Cryptographic Signature

Impacted images

Advisories

NIST

CREATED

4 months ago

UPDATED

2 months ago

ADVISORY IDCVE-2025-8556⁠

EXPLOITABILITY SCORE

2.2

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)

CWE-347⁠

CVSS SCORE

3.7low

GitHub

CREATED

6 months ago

UPDATED

2 months ago

ADVISORY IDGHSA-2x5j-vhc8-9cwm⁠

EXPLOITABILITY SCORE

2.2

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)

CWE-20⁠CWE-347⁠

CVSS SCORE

3.7low

Debian

CREATED

4 months ago

UPDATED

2 months ago

ADVISORY IDCVE-2025-8556⁠

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Ubuntu

CREATED

4 months ago

UPDATED

4 months ago

ADVISORY IDCVE-2025-8556⁠

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

CVSS SCORE

N/Amedium

GoLang

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY IDGO-2025-3754⁠

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Chainguard

CREATED

2 months ago

UPDATED

2 months ago

ADVISORY ID

CGA-r4q4-2c54-ffm9

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Chainguard

CREATED

1 month ago

UPDATED

1 month ago

ADVISORY ID

CGA-wjcv-j8w7-25q7

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Chainguard

CREATED

1 month ago

UPDATED

1 month ago

ADVISORY ID

CGA-ww86-2qvq-h5qh

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

Chainguard

CREATED

2 months ago

UPDATED

2 months ago

ADVISORY ID

CGA-xr8m-8r43-9qhg

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-2wh7-v592-vhcj

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-37q3-wwpp-w6f4

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-3q4f-5jww-2c6f

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-4m9p-qrvm-cr7m

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-4qg6-rrwg-79gv

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-4qwv-2w6r-7755

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-4wvv-rf5j-m7x2

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-53pr-p368-4jwq

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-6q8q-xff7-p78p

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-6xv8-hr99-78fh

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-743f-cf79-qjxw

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-8j98-p4mf-v9rv

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-9j2q-w85q-82r9

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-cvmj-7v5h-p9cf

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-h282-pc6g-x38q

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-hv78-fhpp-c9cg

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

3 months ago

UPDATED

3 months ago

ADVISORY ID

MINI-mcw6-v7ch-x63q

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-rhjj-6wqq-q7pr

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-rp6q-c3px-84rf

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-rvjr-hm7m-r4m8

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

6 months ago

UPDATED

6 months ago

ADVISORY ID

MINI-vmwh-h9v4-36cq

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

4 months ago

UPDATED

4 months ago

ADVISORY ID

MINI-wmxh-p536-hvf4

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

5 months ago

UPDATED

5 months ago

ADVISORY ID

MINI-x847-4qj3-xq3g

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY

minimos

CREATED

4 months ago

UPDATED

4 months ago

ADVISORY ID

MINI-xj6h-6qcw-mqf5

EXPLOITABILITY SCORE

EXPLOITS FOUND

COMMON WEAKNESS ENUMERATION (CWE)-

RATING UNAVAILABLE FROM ADVISORY