CVE-2025-63807: An issue was discovered in weijiang1994 university-bbs (aka Blogin) in commit 9e06bab430bfc729f27b4284ba7570db

Q: How do I fix CVE-2025-63807?

blogin: upgrade to newer than 2024-11-09. Exact commands for each OS are on this page.

Q: Is CVE-2025-63807 being exploited?

CVE-2025-63807 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-63807 affect?

CVE-2025-63807 affects blogin. Severity is critical (CVSS 9.8). An issue was discovered in weijiang1994 university-bbs (aka Blogin) in commit 9e06bab430bfc729f27b4284ba7570db3b11ce84 (2025-01-13). A weak verification code generation mechanism combined with missing rate limiting allows attackers to perfo

Q: How urgent is CVE-2025-63807?

Priority 58/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-63807 is a critical-severity flaw (CVSS 9.8) affecting blogin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in weijiang1994 university-bbs (aka Blogin) in commit 9e06bab430bfc729f27b4284ba7570db3b11ce84 (2025-01-13). A weak verification code generation mechanism combined with missing rate limiting allows attackers to perform brute-force attacks on verification codes without authentication. Successful exploitation may result in account takeover via password reset or other authentication bypass methods.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-307, CWE-1390
Published	2025-11-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: 2dogz

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-20 21:16 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

2dogz blogin UPGRADE

Affected: <= 2024-11-09

Fixed in: newer than 2024-11-09

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy blogin || rpm -q blogin || blogin --version

2. UPGRADE to newer than 2024-11-09 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade blogin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade blogin

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · php-pecl-yac · FIXED · 3.0.2-1.fc46 · FEDORA-2026-0322a78385 · source

sudo dnf upgrade --advisory=FEDORA-2026-0322a78385

Fedora ELN · openldap · FIXED · 2.6.16-1.eln159 · FEDORA-2026-4b30c86326 · source

sudo dnf upgrade --advisory=FEDORA-2026-4b30c86326

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-63807?

blogin: upgrade to newer than 2024-11-09. Exact commands for each OS are on this page.

Is CVE-2025-63807 being exploited?

CVE-2025-63807 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-63807 affect?

CVE-2025-63807 affects blogin. Severity is critical (CVSS 9.8). An issue was discovered in weijiang1994 university-bbs (aka Blogin) in commit 9e06bab430bfc729f27b4284ba7570db3b11ce84 (2025-01-13). A weak verification code generation mechanism combined with missing rate limiting allows attackers to perfo

How urgent is CVE-2025-63807?

Priority 58/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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