Aff A400 Firmware vulnerabilitiesAnd the versions its exploited flaws hit.

Product1 known exploited0 versions
The short answer

Aff A400 Firmware is made by Netapp. We track 21 published vulnerabilities in it, across 0 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 6 October 2025. If you run Aff A400 Firmware, check your version against the exploited flaws below and patch those first.

Check your version

The most recent Aff A400 Firmware flaw added to the known-exploited list is CVE-2021-22555, on 6 October 2025. We keep watching the known-exploited list.

Versions

Which versions of Aff A400 Firmware do the exploited flaws hit?

Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.

Known exploited

Which Aff A400 Firmware vulnerabilities are being exploited?

1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 7.8
    CVE-2021-22555HighKnown exploited
    Linux Kernel Heap Out-of-Bounds Write Vulnerability

    Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.

    Chance of use79%Known exploited since6 Oct 2025
Exploit likelihood

Which Aff A400 Firmware flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 96%

    In addition to the c_rehash shell command injection identified in CVE-2022-1292, further circumstances where the c_rehash script does not properly sanitise shell metacharacters to prevent command injection were found...

    CVSS7.3Published21 Jun 2022
  2. 83%

    The c_rehash script does not properly sanitise shell metacharacters to prevent command injection.

    CVSS7.3Published3 May 2022
  3. 79%
    CVE-2021-22555HighKnown exploited

    A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.

    CVSS7.8Published7 Jul 2021
  4. 5.1%

    A memory leak in the crypto_reportstat() function in crypto/crypto_user_stat.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering...

    CVSS7.5Published18 Nov 2019
  5. 4.6%

    The OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occuppied by the removed hash table entries.

    CVSS7.5Published3 May 2022
  6. 3.6%

    In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based...

    CVSS7.5Published25 Dec 2021
  7. 3.5%

    An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11.

    CVSS9.8Published7 Nov 2019
  8. 3.5%

    A memory leak in the fastrpc_dma_buf_attach() function in drivers/misc/fastrpc.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering dma_get_sgtable()...

    CVSS7.5Published18 Nov 2019
  9. 3.3%

    In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the...

    CVSS7.8Published17 Dec 2019
  10. 2.1%

    In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in try_merge_free_space in...

    CVSS7.8Published8 Dec 2019
Precursor Intelligence

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We track 21 published vulnerabilities listed under the name Aff A400 Firmware, across 0 versions. The most recent Aff A400 Firmware flaw added to the known-exploited list is CVE-2021-22555, on 6 October 2025.

1 is on the list of flaws known to be exploited. The most recently added is CVE-2021-22555.

Create a Precursor Intelligence account and track Aff A400 Firmware. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.