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CVE-2020-35452

mod_auth_digest possible stack overflow by one nul byte

Description

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.53191 (53.2% probability)
Percentile
99.0%
Scores of
Nov 10, 2026
Model
v2026.06.15

Affected products

Products listed in the CVE record, as the CNA published them.

  • Apache HTTP Server

    • affected: 2.4.46
    • affected: 2.4.43
    • affected: 2.4.41
    • affected: 2.4.39
    • affected: 2.4.38
    • affected: 2.4.37
    • affected: 2.4.35
    • affected: 2.4.34
    • affected: 2.4.33
    • affected: 2.4.29
    • affected: 2.4.28
    • affected: 2.4.27
    • affected: 2.4.26
    • affected: 2.4.25
    • affected: 2.4.23
    • affected: 2.4.20
    • affected: 2.4.18
    • affected: 2.4.17
    • affected: 2.4.16
    • affected: 2.4.12
    • affected: 2.4.10
    • affected: 2.4.9
    • affected: 2.4.7
    • affected: 2.4.6
    • affected: 2.4.4
    • and 4 more

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

  1. ID reserved
  2. Record published
  3. Record last updated

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:51 UTC. Sources and licenses