CVE-2021-42949

The component controlla_login function in HotelDruid Hotel Management Software v3.0.3 generates a predictable session token, allowing attackers to bypass authentication via bruteforce attacks.

Published: 2022-09-16 Last update: 2025-06-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-42949 is rated High Risk (77/100): CVSS Critical severity, with high exploitation likelihood (EPSS 36.79%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.81% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2021-42949

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 2025-09-19 32.98% 36.79% +3.81%
2 2025-09-18 33.42% 32.98% -0.45%
3 2025-09-17 — 33.42% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-42949

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 3.1 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 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2021-42949

OS Trackers for CVE-2021-42949

vendor priority summary link
debian not yet assigned CVE-2021-42949 not yet assigned priority: Debian including 1 source packages (hoteldruid), 3 status rows across 3 suites (bookworm, bullseye, sid): resolved 2, open 1. https://security-tracker.debian.org/tracker/CVE-2021-42949
ubuntu medium CVE-2021-42949 medium priority: Ubuntu including 1 source packages (hoteldruid), 13 status rows across 13 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, upstream, xenial): not-affected 6, ignored 4, needs-triage 2, released 1. https://ubuntu.com/security/CVE-2021-42949

Affected software / configurations for CVE-2021-42949

Vendor Product Version Raw CPE
digitaldruid hoteldruid 3.0.3 cpe:2.3:a:digitaldruid:hoteldruid:3.0.3:*:*:*:*:*:*:*

References for CVE-2021-42949

cvelogic Threat Intelligence