CVE-2018-1312

mediumpriority · attend · 45EPSS 0.157 · 97 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

15.7% (97th) EPSS

CVSS 6.8 · medium

Is it mine?

65 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

EPSS · scored 2026-10-27

In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.8–9.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.17.3highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287US

affected products (65)

Products and version ranges known to be affected.

Apache Software Foundation Apache HTTP Server≤ 2.0.42 to 2.4.29enisa_euvdEU
Apache Software Foundation HTTP Server≤ 2.4.9fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.27fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.26fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.25fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.23fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.20fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.18fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.17fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.12fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.1fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.2fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.3fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.4fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.6fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.7fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.10fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.16fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.29fstec_bduRU
Apache Software Foundation HTTP Server≤ 2.4.28fstec_bduRU

showing 20 of 65

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 CVE.org MITRE

published 2018-03-26modified 2026-06-17

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+7714 more

references (97)

External citations — patches, advisories, analysis.

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