CVE-2026-33515

Summary

Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero icp_port). This problem cannot be mitigated by denying ICP queries using icp_access rules. Version 7.5 contains a patch.

Affected Software

VendorProductVersion RangeStatus
squid-cachesquid< 7.5affected

Weaknesses

  • CWE-125: CWE-125: Out-of-bounds Read
  • CWE-1289: CWE-1289: Improper Validation of Unsafe Equivalence in Input

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References