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01 Record

CVE-2026-81019

wolfProvider reuses the AES-GCM nonce on every TLS 1.2 / DTLS 1.2 record

HighPUBLISHEDCNA: wolfSSL
CNA base score7.4 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

02 Description

wolfProvider reuses the AES-GCM nonce on every TLS 1.2 / DTLS 1.2 record

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.1% of scored records. A rank, not a probability.
NVD base score
7.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-09-29.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-28 14:42Z2 MO AGO
Last updated
2026-08-28 18:22Z2 MO AGO
Reserved
2026-08-26
Assigning CNA
wolfSSL
Record state
PUBLISHED
Severity
High (CVSS 7.4)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
  • CWE-323Reusing a Nonce, Key Pair in EncryptionBase
Data version
5.2
Document digest
1a4efdff450f1dd65daa0d57460d6e0cf1bfca1c6981eedc51d38ec1a5a221f3

05 Affected products

VendorProductVersionsPlatforms
wolfSSL Inc.wolfProvider0 to 1.2.1—

06 References

07 Remediation

Upgrade to wolfProvider 1.2.2, which increments the explicit nonce after each record. As an interim mitigation use AES-CCM or TLS 1.3 instead of TLS 1.2 / DTLS 1.2 AES-GCM.