Vulnerability

CVE-2026-34032

High· 5.3ZDICVSS5.3EPSS0%

.rules3/5

ZDI-26-356: Apache HTTP Server mod_proxy_ajp Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Apache HTTP Server. An attacker must first obtain the ability to compromise an AJP backend associated with the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 3.7. The following CVEs are assigned: CVE-2026-34032.

Threat signal

75/100

High

Severity

high

CVSS

5.3

EPSS

Active

CVSS

v3.1via NVDOpen in FIRST calculator →

5.3/ 10MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactLowSome data disclosure; attacker doesn't fully control what.
Integrity ImpactNoneNo integrity impact.
Availability ImpactNoneNo availability impact.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.25%

probability of exploitation in next 30 days

p48

higher than 48% of all CVEs

2-day trend↑ 0pp

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2026-34032. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCDefer

No exploitation, limited impact or prevalence

exploitation: none
automatable: no
impact: partial
mission: support

Lifecycle

2026-05-07Vendor advisory · microsoftCVE-2026-34032 — Apache HTTP Server: mod_proxy_ajp: Heap Buffer Over-Read Due to Missing Null-Ter
2026-05-26Vendor advisory · amazon-linuxALAS2-2026-3314 — ALAS2-2026-3314 (important): httpd
2026-06-11Published
2026-06-11Last modified2 sources

Entity graph

3 nodes · 2 edges · click to pivot

CVEActorVendor advisoryIOCNews

Vendor advisories

References

http://www.zerodayinitiative.com/advisories/ZDI-26-356/

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.