CVE-2015-5522

6.8 MEDIUM 5% exploit odds No fix listed

What it is

Heap-based buffer overflow in the ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving a command character in an href.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 4.6% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2015-08-11 14:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:29 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 4.6% in the next 30 days (EPSS).
Severity: 6.8 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2015-08-11 14:59 UTC
Last modified: 2026-06-17 00:29 UTC
Exploit probability: 4.6% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Modified

Affected

Htacg Tidy ≤ 4.9.30
Canonical Ubuntu Linux 12.04
Canonical Ubuntu Linux 14.04
Canonical Ubuntu Linux 15.04
Debian Linux 7.0
Debian Linux 8.0
Apple Iphone Os ≤ 8.2
Apple Mac Os X ≤ 10.6.8

Attack profile CVSS 2.0 · 6.8

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Is it in your code?

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References

NVD record · CVE.org record