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| Vulnerability ID | VCID-vard-hwsg-ukex |
| Aliases |
CVE-2021-32777
|
| Summary | envoyproxy/envoy: HTTP request with multiple value headers can bypass authorization policies |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 8.0 |
| Risk | 4.0 |
| Affected and Fixed Packages | Package Details |
| CWE-863 | Incorrect Authorization |
| Reference id | Reference type | URL |
|---|---|---|
| https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-32777.json | ||
| https://api.first.org/data/v1/epss?cve=CVE-2021-32777 | ||
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h | ||
| https://www.envoyproxy.io/docs/envoy/v1.19.0/version_history/version_history | ||
| 1996933 | https://bugzilla.redhat.com/show_bug.cgi?id=1996933 | |
| AVG-2321 | https://security.archlinux.org/AVG-2321 | |
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | |
| cpe:2.3:a:envoyproxy:envoy:1.19.0:*:*:*:*:*:*:* | https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:envoyproxy:envoy:1.19.0:*:*:*:*:*:*:* | |
| CVE-2021-32777 | https://nvd.nist.gov/vuln/detail/CVE-2021-32777 | |
| RHSA-2021:3272 | https://access.redhat.com/errata/RHSA-2021:3272 | |
| RHSA-2021:3273 | https://access.redhat.com/errata/RHSA-2021:3273 |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Exploitability (E) | Access Vector (AV) | Access Complexity (AC) | Authentication (Au) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|
high functional unproven proof_of_concept not_defined |
local adjacent_network network |
high medium low |
multiple single none |
none partial complete |
none partial complete |
none partial complete |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.03737 |
| EPSS Score | 0.0002 |
| Published At | July 30, 2025, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2025-07-31T10:14:13.424498+00:00 | RedHat Importer | Import | https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-32777.json | 37.0.0 |