EUVD-2026-21180
GHSA-vgv9-mv66-mpc7
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionCVE.org
In wolfSSL, ARIA-GCM cipher suites used in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte GCM nonce for every application-data record. Because wc_AriaEncrypt is stateless and passes the caller-supplied IV verbatim to the MagicCrypto SDK with no internal counter, and because the explicit IV is zero-initialized at session setup and never incremented in non-FIPS builds. This vulnerability affects wolfSSL builds configured with --enable-aria and the proprietary MagicCrypto SDK (a non-default, opt-in configuration required for Korean regulatory deployments). AES-GCM is not affected because wc_AesGcmEncrypt_ex maintains an internal invocation counter independently of the call-site guard.
AnalysisAI
wolfSSL's ARIA-GCM cipher suites in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte nonce for every encrypted application-data record, enabling plaintext recovery through cryptanalytic attacks. This vulnerability affects only non-FIPS builds explicitly configured with --enable-aria and the proprietary MagicCrypto SDK (opt-in for Korean regulatory compliance). …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Vulnerability AssessmentAI
| Risk Assessment | CVSS 6.0 (Medium) reflects remote network attack (AV:N), low complexity (AC:L), requiring attacker preparation (AT:P) and low-privilege authentication (PR:L), with high confidentiality impact (VC:H) but limited integrity/availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated attacker with access to a TLS 1.2 or DTLS 1.2 session using ARIA-GCM cipher suites can observe multiple application-data records encrypted under the same nonce (due to the static zero-initialized IV). By analyzing the XOR relationship between ciphertexts sharing an identical nonce, the attacker recovers portions of plaintext through algebraic cryptanalysis (e.g., GCM nonce-reuse attacks documented in cryptographic literature). … |
| Remediation | Apply the upstream fix from wolfSSL GitHub pull request #10111 (https://github.com/wolfSSL/wolfssl/pull/10111), which corrects the nonce-reuse behavior in ARIA-GCM implementations. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Share
External POC / Exploit Code
Leaving vuln.today