CVE-2021-21783

Exp

A code execution vulnerability exists in the WS-Addressing plugin functionality of Genivia gSOAP 2.8.107. A specially crafted SOAP request can lead to remote code execution. An attacker can send an HTTP request to trigger this vulnerability.

Published: 2021-03-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-21783 is rated High Exploit Risk (87.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.51%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.45% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-21783

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-21783

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-29 2.06% 4.51% +2.45%
2 2026-01-14 3.52% 2.06% -1.46%
3 2025-12-31 — 3.52% —

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-21783

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2021-21783

OS Trackers for CVE-2021-21783

vendor priority summary link
alpine critical CVE-2021-21783: 1 source package rows (gsoap); 7 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 0. https://security.alpinelinux.org/vuln/CVE-2021-21783
debian unimportant CVE-2021-21783 unimportant priority: Debian including 1 source packages (gsoap), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2021-21783
ubuntu medium CVE-2021-21783 medium priority: Ubuntu including 1 source packages (gsoap), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 8, needs-triage 7, DNE 1. https://ubuntu.com/security/CVE-2021-21783

Affected software / configurations for CVE-2021-21783

Vendor Product Version Raw CPE
genivia gsoap 2.8.107 cpe:2.3:a:genivia:gsoap:2.8.107:*:*:*:*:*:*:*
oracle communications_diameter_signaling_router >= 8.0.0, <= 8.5.0 cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*
oracle communications_eagle_application_processor >= 16.1.0, <= 16.4.0 cpe:2.3:a:oracle:communications_eagle_application_processor:*:*:*:*:*:*:*:*
oracle communications_eagle_lnp_application_processor 46.7 cpe:2.3:a:oracle:communications_eagle_lnp_application_processor:46.7:*:*:*:*:*:*:*
oracle communications_eagle_lnp_application_processor 46.8 cpe:2.3:a:oracle:communications_eagle_lnp_application_processor:46.8:*:*:*:*:*:*:*
oracle communications_eagle_lnp_application_processor 46.9 cpe:2.3:a:oracle:communications_eagle_lnp_application_processor:46.9:*:*:*:*:*:*:*
oracle communications_lsms 13.1 cpe:2.3:a:oracle:communications_lsms:13.1:*:*:*:*:*:*:*
oracle communications_lsms 13.2 cpe:2.3:a:oracle:communications_lsms:13.2:*:*:*:*:*:*:*
oracle communications_lsms 13.3 cpe:2.3:a:oracle:communications_lsms:13.3:*:*:*:*:*:*:*
oracle communications_lsms 13.4 cpe:2.3:a:oracle:communications_lsms:13.4:*:*:*:*:*:*:*
oracle tekelec_virtual_operating_environment >= 3.4.0, <= 3.7.1 cpe:2.3:a:oracle:tekelec_virtual_operating_environment:*:*:*:*:*:*:*:*

References for CVE-2021-21783

URL Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1245 Exploit Technical Description Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory
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