Common Weakness Enumeration
CWE-341
AllowedPredictable from Observable State
Abstraction: Base · Status: Draft
A number or object is predictable based on observations that the attacker can make about the state of the system or network, such as time, process ID, etc.
24 vulnerabilities reference this CWE, most recent first.
CVE-2026-42365 (GCVE-0-2026-42365)
Vulnerability from cvelistv5 – Published: 2026-05-04 00:42 – Updated: 2026-06-15 19:19
VLAI
EPSS
VEX
Title
GeoVision LPC2011/LPC2211 Web Interface guessable session cookie vulnerability
Summary
A guessable session cookie vulnerability exists in the Web Interface functionality of GeoVision LPC2011/LPC2211 1.10. A specially crafted series of HTTP requests can lead to an authentication bypas. An attacker can bruteforce session cookies to trigger this vulnerability.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 12:58 UTC
CWE
- CWE-341 - Predictable from observable state
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.geovision.com.tw/cyber_security.php | vendor-advisory |
| https://talosintelligence.com/vulnerability_reports/ | third-party-advisory |
| https://www.talosintelligence.com/vulnerability_r… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GeoVision Inc. | GV-LPC2011/LPC2211 |
Affected:
1.10
Unaffected: 1.12 cpe:2.3:a:geovision_inc.:gv-lpc2011_lpc2211:1.10:*:linux:*:*:*:*:* |
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CVE-2026-19565 (GCVE-0-2026-19565)
Vulnerability from cvelistv5 – Published: 2026-08-23 19:18 – Updated: 2026-08-23 22:05
VLAI
EPSS
VEX
Title
Apache::AppSamurai::Util versions through 1.01 for Perl generate predictable session authentication keys from the clock and process id in CreateSessionAuthKey
Summary
Apache::AppSamurai::Util versions through 1.01 for Perl generate predictable session authentication keys from the clock and process id in CreateSessionAuthKey.
CreateSessionAuthKey runs five rounds of SHA-256, each over a fresh Time::HiRes reading formatted to six decimal places, the running digest, and the process id. CreateSession calls it with an empty key source on every login, and the optional Keysource directive is the only route to the other branch. The result is 64 hex characters. The microsecond field of the first reading takes one of a million values, the later readings follow it within microseconds, and the process id is drawn from a small range.
The key is returned to the browser as the session cookie, and is combined with the configured server key to compute the session id and to encrypt the stored session data. An attacker who knows the second in which a session was created and the process id of the worker that created it can enumerate candidate keys and recover the victim's cookie, bypassing authentication for the protected resources. Each candidate has to be tried against the server, which validates the cookie with a key the attacker does not hold.
Severity
No CVSS data available.
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
3 references
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CVE-2026-15571 (GCVE-0-2026-15571)
Vulnerability from cvelistv5 – Published: 2026-08-18 20:40 – Updated: 2026-08-20 14:07
VLAI
EPSS
VEX
Title
Keycloak-services: keycloak-services: predictable account-linking hash enables account takeover via malicious oidc client
Summary
A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC client. By tricking a user into authenticating, an attacker-controlled client can forge a valid linking URL to connect the victim's account to an attacker's external identity. This results in a full account takeover, allowing the attacker to log in as the victim.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 14:06 UTC
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:56523 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:56524 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-15571 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2499591 | issue-trackingx_refsource_REDHAT |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.6 |
Unaffected:
26.6.6-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.6::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6 |
Unaffected:
26.6-12 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.6::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6.6 |
cpe:/a:redhat:build_keycloak:26.6
|
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8
|
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp
|
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7
|
Date Public
2026-08-18 19:41
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CVE-2025-42925 (GCVE-0-2025-42925)
Vulnerability from cvelistv5 – Published: 2025-09-09 02:09 – Updated: 2025-09-09 14:27
VLAI
EPSS
VEX
Title
Predictable Object Identifier vulnerability in SAP NetWeaver AS Java (IIOP Service)
Summary
Due to the lack of randomness in assigning Object Identifiers in the SAP NetWeaver AS JAVA IIOP service, an authenticated attacker with low privileges could predict the identifiers by conducting a brute force search. By leveraging knowledge of several identifiers generated close to the same time, the attacker could determine a desired identifier which could enable them to access limited system information. This poses a low risk to confidentiality without impacting the integrity or availability of the service.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-09 14:21 UTC
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | SAP NetWeaver AS Java (IIOP Service) |
Affected:
SERVERCORE 7.50
|
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CVE-2025-40780 (GCVE-0-2025-40780)
Vulnerability from cvelistv5 – Published: 2025-10-22 15:48 – Updated: 2025-11-04 21:10
VLAI
EPSS
VEX
Title
Cache poisoning due to weak PRNG
Summary
In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use.
This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-22 17:27 UTC
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2025-40780 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/10/22/1 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.16.0 , ≤ 9.16.50
(custom)
Affected: 9.18.0 , ≤ 9.18.39 (custom) Affected: 9.20.0 , ≤ 9.20.13 (custom) Affected: 9.21.0 , ≤ 9.21.12 (custom) Affected: 9.16.8-S1 , ≤ 9.16.50-S1 (custom) Affected: 9.18.11-S1 , ≤ 9.18.39-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.13-S1 (custom) |
Date Public
2025-10-22 00:00
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CVE-2024-10141 (GCVE-0-2024-10141)
Vulnerability from cvelistv5 – Published: 2024-10-19 15:00 – Updated: 2024-10-21 13:58
VLAI
EPSS
VEX
Title
jsbroks COCO Annotator Session predictable state
Summary
A vulnerability, which was classified as problematic, was found in jsbroks COCO Annotator 0.11.1. This affects an unknown part of the component Session Handler. The manipulation of the argument SECRET_KEY leads to predictable from observable state. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-21 13:55 UTC
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.280929 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.280929 | signaturepermissions-required |
| https://vuldb.com/?submit.422713 | third-party-advisory |
| https://github.com/jsbroks/coco-annotator/issues/626 | issue-tracking |
| https://github.com/jsbroks/coco-annotator/issues/… | exploitissue-tracking |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| jsbroks | COCO Annotator |
Affected:
0.11.1
|
|
| jsbroks | coco_annotator |
Affected:
0.11.1
cpe:2.3:a:jsbroks:coco_annotator:*:*:*:*:*:*:*:* |
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CVE-2023-49259 (GCVE-0-2023-49259)
Vulnerability from cvelistv5 – Published: 2024-01-12 14:25 – Updated: 2025-06-20 16:41
VLAI
EPSS
VEX
Title
Bruteforcing authentication cookie for a given user
Summary
The authentication cookies are generated using an algorithm based on the username, hardcoded secret and the up-time, and can be guessed in a reasonable time.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-12 15:58 UTC
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2024/01/CVE-2023-49253/ | third-party-advisory |
| https://cert.pl/posts/2024/01/CVE-2023-49253/ | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Hongdian | H8951-4G-ESP |
Affected:
0 , < 2310271149
(custom)
|
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CVE-2021-4277 (GCVE-0-2021-4277)
Vulnerability from cvelistv5 – Published: 2022-12-25 10:20 – Updated: 2024-08-03 17:23
VLAI
EPSS
VEX
Title
fredsmith utils Filename screenshot_sync predictable state
Summary
A vulnerability, which was classified as problematic, has been found in fredsmith utils. This issue affects some unknown processing of the file screenshot_sync of the component Filename Handler. The manipulation leads to predictable from observable state. The name of the patch is dbab1b66955eeb3d76b34612b358307f5c4e3944. It is recommended to apply a patch to fix this issue. The identifier VDB-216749 was assigned to this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-18 18:28 UTC
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.216749 | technical-descriptionvdb-entry |
| https://github.com/fredsmith/utils/commit/dbab1b6… | mitigationpatch |
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CVE-2020-5365 (GCVE-0-2020-5365)
Vulnerability from cvelistv5 – Published: 2020-05-20 20:45 – Updated: 2024-09-16 17:17
VLAI
EPSS
VEX
Summary
Dell EMC Isilon versions 8.2.2 and earlier contain a remotesupport vulnerability. The pre-configured support account, remotesupport, is bundled in the Dell EMC Isilon OneFS installation. This account is used for diagnostics and other support functions. Although the default password is different for every cluster, it is predictable.
Severity
5.3 (Medium)
CWE
- CWE-341 - Predictable from Observable State
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/security/en-us/detai… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | Isilon OneFS |
Affected:
unspecified , < 8.2.2
(custom)
|
Date Public
2020-05-15 00:00
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CVE-2020-1731 (GCVE-0-2020-1731)
Vulnerability from cvelistv5 – Published: 2020-03-02 16:22 – Updated: 2024-08-04 06:46
VLAI
EPSS
VEX
Summary
A flaw was found in all versions of the Keycloak operator, before version 8.0.2,(community only) where the operator generates a random admin password when installing Keycloak, however the password remains the same when deployed to the same OpenShift namespace.
Severity
9.1 (Critical)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
Impacted products
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Mitigation
Implementation
Increase the entropy used to seed a PRNG.
Mitigation MIT-2
Architecture and Design
Requirements
Strategy: Libraries or Frameworks
Use products or modules that conform to FIPS 140-2 [REF-267] to avoid obvious entropy problems. Consult FIPS 140-2 Annex C ("Approved Random Number Generators").
Mitigation MIT-50
Implementation
Use a PRNG that periodically re-seeds itself using input from high-quality sources, such as hardware devices with high entropy. However, do not re-seed too frequently, or else the entropy source might block.
No CAPEC attack patterns related to this CWE.