CVE-2018-16869

lowpriority · track · 24EPSS 0.015 · 74 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.49% (74th) EPSS

CVSS 3.3 · low

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.

cvss

Technical severity, 0–10. One row per scoring source.

5.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.3–5.7

v2.03.3lowAV:L/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 3.4 · impact 4.9

v3.15.7mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:Nprimary · NVD / NIST USexploitability 0.5 · impact 4.7

v3.04.7mediumCVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:Nsecondary · ENISA EU

v3.04.7mediumCVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:Nsecondary · secalert@redhat.com USexploitability 0.3 · impact 4

v3.14.7mediumAV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.2mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-310US

affected products (4)

Products and version ranges known to be affected.

[UNKNOWN] nettle≤ n/aenisa_euvdEU
Nettle Project Nettle≤ 3.3.1fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition для «Эльбрус»≤ 8.1 «Ленинград»fstec_bduRU
nettle project nettle≤ 3.4nvdUScpe:2.3:a:nettle_project:nettle:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2018-12-03modified 2026-06-17

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+881 more

references (12)

External citations — patches, advisories, analysis.

scry

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