CVE Explorer
CVE-2026-5504
A padding oracle exists in wolfSSL's PKCS7 CBC decryption that could allow an attacker to recover plaintext through repeated decryption queries with modified ciphertext. In previous versions of wolfSSL the interior padding bytes are not validated.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","modules":["PKCS7"],"product":"wolfSSL","programFiles":["wolfcrypt/src/pkcs7.c"],"vendor":"wolfSSL","versions":[{"lessThanOrEqual":"5.9.0","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:b3486fc7f1fd78247f8775b81c813e6a287678da1fd8d5982612e8c791e85f8c · sha256:f18414cdedba1c1e… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImp…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:b3486fc7f1fd78247f8775b81c813e6a287678da1fd8d5982612e8c791e85f8c · sha256:f18414cdedba1c1e… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-354","description":"CWE-354 Improper validation of integrity check value","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:b3486fc7f1fd78247f8775b81c813e6a287678da1fd8d5982612e8c791e85f8c · sha256:f18414cdedba1c1e… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://github.com/wolfSSL/wolfssl/pull/10088"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b3486fc7f1fd78247f8775b81c813e6a287678da1fd8d5982612e8c791e85f8c · sha256:f18414cdedba1c1e… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.