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CVE-2026-28388

Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the required CRL Number extension is missing. Impact summary: A NULL pointer dereference can trigger a crash which leads to a Denial of Service for an application. When CRL processing and delta CRL processing is enabled during X.509 certificate verification, the delta CRL processing does not check whether the CRL Number extension is NULL before dereferencing it.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0cbc9799d741145e549a9e20b392847cfd68021bb9e39a134b76324da3dce8aa
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"unknown","product":"SIMATIC CN 4100","vendor":"Siemens","versions":[{"lessThan":"V5.0","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/1/affected/0

{"defaultStatus":"unaffected","product":"OpenSSL","vendor":"OpenSSL","versions":[{"lessThan":"3.6.2","status":"affected","version":"3.6.0","versionType":"semver"},{"lessThan":"3.5.6","status":"affected","version":"3.5.0","versionType":"semver"},{"lessThan":"3.4.5","status":"affected","version":"3.4.0","versionType":"semver"},{"lessThan":"3.3.7","status":"affected","version":"3.3.0","versionType":"semver"},{"lessThan":"3.0.20","status":"affected","version":"3.0.0","versionType":"semver"},{"lessThan":"1.1.1zg","status":"affected","version":"1.1.1","versionType":"custom"},{"lessThan":"1.0.2zp","s…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/affected/0

{"defaultStatus":"unknown","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/1/affected/1

Affected products and versions

3 source assertions
{"defaultStatus":"unknown","product":"SIMATIC CN 4100","vendor":"Siemens","versions":[{"lessThan":"V5.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/1/affected/0
{"defaultStatus":"unaffected","product":"OpenSSL","vendor":"OpenSSL","versions":[{"lessThan":"3.6.2","status":"affected","version":"3.6.0","versionType":"semver"},{"lessThan":"3.5.6","status":"affected","version":"3.5.0","versionType":"semver"},{"lessThan":"3.4.5","status":"affected","version":"3.4.0","versionType":"semver"},{"lessThan":"3.3.7","status":"affected","version":"3.3.0","versionType":"semver"},{"lessThan":"3.0.20","status":"affected","version":"3.0.0","versionType":"semver"},{"lessThan":"1.1.1zg","status":"affected","version":"1.1.1","versionType":"custom"},{"lessThan":"1.0.2zp","s…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/1/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-476","description":"CWE-476 NULL Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/problemTypes/0/descriptions/0

Source references

8 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-032379.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/1/references/1
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/adp/1/references/0
{"name":"3.0.20 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/59c3b3158553ab53275bbbccca5cb305d591cf2e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/references/5
{"name":"3.3.7 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/5a0b4930779cd2408880979db765db919da55139"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/references/4
{"name":"3.6.2 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/602542f2c0c2d5edb47128f93eac10b62aeeefb3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/references/1
{"name":"3.4.5 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/a9d187dd1000130100fa7ab915f8513532cb3bb8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/references/3
{"name":"3.5.6 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/d3a901e8d9f021f3e67d6cfbc12e768129862726"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /containers/cna/references/2
{"name":"OpenSSL Advisory","tags":["vendor-advisory"],"url":"https://openssl-library.org/news/secadv/20260407.txt"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:966350ba0ceabce90dcf5905ebb685f6573c252344e7c35cf18e2abb3bb35a20 · sha256:88a42b5279be6479… · /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.

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