Vulnerability details
CVE-2026-43033
Linux LinuxSiemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFPSiemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPSiemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption
CVSS 3.1
7.8High
Official description
In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption When decrypting data that is not in-place (src != dst), there is no need to save the high-order sequence bits in dst as it could simply be re-copied from the source. However, the data to be hashed need to be rearranged accordingly. Thanks,
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 4.3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < 8c62f618576519dbed6816fafc623ce592953025 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < 5466e7d0cd9e4f9cef9d8f18f18b60e7bc1c77e5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < d0c4ff6812386880f30bc64c2921299cc4d7b47f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < d589abd8b019b07075fda255ceab8c8e950cdb3f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < 153d5520c3f9fd62e71c7e7f9e34b59cf411e555 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < cded4002d22177e8deaca1f257ecd932c9582b6b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < e02494114ebf7c8b42777c6cd6982f113bfdbec7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 104880a6b470958ddc30e139c41aa4f6ed3a5234 ≤ v < 89fe118b6470119b20c04afc36e45b81a69ea11f | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.5 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
References and advisories
11- https://git.kernel.org/stable/c/8c62f618576519dbed6816fafc623ce592953025
- https://git.kernel.org/stable/c/d589abd8b019b07075fda255ceab8c8e950cdb3f
- https://git.kernel.org/stable/c/5466e7d0cd9e4f9cef9d8f18f18b60e7bc1c77e5
- https://git.kernel.org/stable/c/d0c4ff6812386880f30bc64c2921299cc4d7b47f
- https://git.kernel.org/stable/c/89fe118b6470119b20c04afc36e45b81a69ea11f
- https://git.kernel.org/stable/c/153d5520c3f9fd62e71c7e7f9e34b59cf411e555
- https://git.kernel.org/stable/c/cded4002d22177e8deaca1f257ecd932c9582b6b
- https://git.kernel.org/stable/c/e02494114ebf7c8b42777c6cd6982f113bfdbec7
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
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Details
- Published
- 2026-05-01
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.13%
Probability of exploitation in 30 days
3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-682Incorrect Calculation